GMAT 12.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 ro

GMAT 12.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 ro
GMAT
12.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 mantained.
(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 rela-tively stable prices in recent years.
不是很理解.

GMAT 12.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 ro
题干的意思是：一个广告被设计来说服读者,D公司生产的汽车具有很好的耐用性,这个广告引用了一个证据就是D公司自从1970年以来生产的汽车,现在有一大半还在路上,而其它任何一家公司都没有超过三分之一的.
问题是哪一个选项支持了这种论点.
A、inflation是个无关条件.
C、D汽车的拥有者对汽车保养的很好,这个事实实际上削弱了题干的论点,因为现在在路上的汽车多,可能是因为保养的好,而非汽车本身耐用.
D、自从1970年,D公司对汽车做的改动比别的公司少.改动多少是一个无关条件,也是一个无关比较.
E、D公司的汽车价格稳定.无关条件.
B、自从1970年以来,D公司的产量没有大幅提高.这是个正确选项,因为它排除了一个可能削弱题干论点的因素.如果D公司的产量近年来大幅提高,那么就说明现在路上跑的都是新车,也就不能说明D汽车的耐用性好.而B选项排除了这种可能,因此支持了文中论点.