请教 狒狒22

22，In 1992, a major newspaper circulated throughout North American paid its reporters an average salary paid by its principle competitors to their reporters. An executive of the newspaper argued that this practice was justified,
                since any shortfall that might exist in the reporters’ salaries is fully compensated by the valuable training they receive through their assignments.

Which one of the following, if true about the newspaper in 1992, most seriously undermines the justification offered by the executive?

(A) Senior reporters at the newspaper earned as much as reporters of similar stature who worked for the newspaper’s principle competitors.

(B) Most of the newspaper’s reporters had worked there for more than ten years.

(C) The circulation of the newspaper had recently reached a plateau, after it had increased steadily throughout the 1980s.

(D) The union that represented reporters at the newspaper was different from the union that represented reporters at the newspaper’s competitors.

(E) The newspaper was widely read throughout continental Europe and Great Britain as well as North America.

答案是B，做的时候感觉都不太对啊，请各位NN帮忙解答啊。

A 是加强了

CDE 无关

B我也觉得不好 因为他假设对于工作时间长记者 培训就不那么有价值了 但是B是唯一能weaken的选项 只能选它