求助：不知哪来的一道题，就是搞不懂。。

orchid347

An advertisement designed to convince readers of the great durability of automobiles manufactured by the Deluxe Motor Car Company cites as evidence the fact that over half of all automobiles built by the company since 1970 are still on the road today, compared to no more than a third for any other manufacturer.
Which of the following, if true, most strongly supports the advertisement's argument?
(A) After taking inflation into account, a new Deluxe automobile costs only slightly more than a new model did in 1970.
(B) The number of automobiles built by Deluxe each year has not increased sharply since 1970.
(C) Owners of Deluxe automobiles typically keep their cars well maintained.
(D) Since 1970, Deluxe has made fewer changes in the automobiles it manufactures than other car companies have made in their automobiles.
(E) Deluxe automobiles have been selling at relatively stable prices in recent years.
我认为答案是D，因为：要说明DMCC的车经久耐用，D强调了他们近年来的改变不大，正好说明了从70年代以来他们很耐用这个观点。
可是答案是B。。。我觉得削弱了呢，因为B说70年代后DMCC产量没怎么增大，给人一个感觉就是，顾客们都没地儿买DMCC的新车了，就凑合用以前的了，不能说明它们耐用。
我逻辑是不是有点怪异，求助大家，多谢多谢

moremildseven

额 B选项应该是一个排除他因吧 提干说over half of all automobiles built by the company since 1970 are still on the road today 而其它公司的只有1/3 但是如果是因为1970后这个公司生产的车多了许多呢 那么就无法得出这个广告所宣传的结论（the great durability of automobiles manufactured ）