[求助]补充材料238，怎么回事啊

238. Very popular from 1900 until the 1920's, the renewed interest in ceiling fans began when the energy crisis in 1974 forced homeowners to look for alternative methods of heating and cooling.

(A) Very popular from 1900 until the 1920's, the renewed interest in ceiling fans began
(B) The renewed interest in ceiling fans, which were very popular from 1900 until the 1920's，began
(C) After they were very popular from 1900 until the 1920’s, the renewed interest in ceiling fans was beginning
(D) Ceiling fans were very popular from 1900 until the 1920’s, with renewed interest beginning in them
(E) From 1900 until the 1920’s ceiling fans were very popular, and now the renewed interest in them has begun

答案选B。我的疑问是：-
主语应该是the renewed interest, 谓语应该是began，
而which were very popular from 1900 until the 1920's 应该是修饰 ceiling fans的。那which were very popular from 1900 until the 1920's后面应该有逗号才对啊

应该有逗号，给你加上了，可能你的大全文件有问题，重下大全吧。