一道态度题

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求助各位大神一道阅读题，这道题的E为什么不对？

When A. PhilipRandolph assumed the leadership of the Brotherhood of SleepingCar (sleeping car: 卧车)Porters, he began a ten-year battle to win recognition from the Pullman (Pullman:n.卧车, 普式火车(19世纪美国发明家George M.Pullman设计的豪华型列车车厢,常用为特等客车)) Company, the largest private employer of Black people in the United Statesand the company that controlled the railroad industry’s sleeping car (sleeping car: 卧车) and parlor (a room used primarily for conversation orthe reception of guests: parlor car: n.特等豪华铁路客车)service. In 1935 the Brotherhood became the first Black union recognized by amajor corporation. Randolph’s efforts in the battle helped transform theattitude of Black workers toward unions and toward themselves as anidentifiable group; eventually, Randolph helped to weaken organized labor’santagonism toward Black workers.

In the Pullmancontest Randolph faced formidable obstacles. The first was Black workers’understandable skepticism toward unions, which had historically barred Blackworkers from membership. An additional obstacle was the union that Pullmanitself had formed, which weakened support among Black workers for anindependent entity.

The Brotherhoodpossessed a number of advantages, however, including Randolph’s own tacticalabilities. In 1928 he took the bold step of threatening a strike againstPullman. Such a threat, on a national scale, under Black leadership, helpedreplace the stereotype of the Black worker as servant with the image of theBlack worker as wage earner (wage earner: n.靠工资为生的人, 雇佣劳动者). In addition, the porters’ very isolation aided the Brotherhood.Porters were scattered throughout the country, sleeping in dormitories in Blackcommunities; their segregated life protected the union’s internalcommunications from interception. That the porters were a homogeneous groupworking for a single employer with single labor policy, thus sharing the samegrievances from city to city, also strengthened the Brotherhood and encouragedracial identity and solidarity as well. But it was only in the early 1930’sthat federal legislation prohibiting a company from maintaining its own unionswith company money eventually allowed the Brotherhood to become recognized asthe porters’ representative.

Not content withthis triumph, Randolph brought the Brotherhood into the American Federation ofLabor, where it became the equal of the Federation’s 105 other unions. Hereasoned that as a member union, the Brotherhood would be in a better positionto exert pressure on member unions that practiced race restrictions. Suchrestrictions were eventually found unconstitutional in 1944.

2.    Inusing the word “understandable” (line 14), the author most clearly conveys

(A) sympathy with attempts by theBrotherhood between 1925 and 1935 to establish an independent union

(B) concern that the obstacles faced byRandolph between 1925 and 1935 were indeed formidable

(C) ambivalence about the significance ofunions to most Black workers in the 1920’s

(D) appreciation of the attitude of manyBlack workers in the 1920’s toward unions（D）

(E) regret at the historical attitude ofunions toward Black workers