XDF增补篇 P10中的一道题

liberzephyr

文章
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One author estimates that 40 percent of New York China town firms established during 1900 - 1950 utilized such association as there initial source of capital. However, recent immigrants and third or fourth generations of older groups now employ rotating credit association only occasionally to raise investment funds.
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Q:Which of the following can be inferred from the passage about rotating credit associations?
B.They accounted for a significant portion of the investment capital used by Chinese immigrants in New York in the early twentieth century.
C.Third-generation members of an immigrant group who started businesses in the 1920's would have been unlikely to reply on them.

答案选C，第三代移民不用RCA，但是这里1920好像不对啊（1900-1950年大家都用，最近的第三代不用）
我想选B，significant portion对应 文中40%，  early twentieth century对应1900-1950，New York China town firms对应 Chinese immigrants in New York （这个对应有问题 一个是纽约的中国人，一个是纽约唐人街的中国人，两者有差异）
两个都不太好，我觉得C错的更厉害。

高手们怎么看
谢谢