LSAT－23－4－11

11.   Five thousand of the 50,000 books published in country Z in 1991 were novels. Exactly 25 of the films released in country Z in 1992 were based on those novels. Since 100 films were released in country Z in 1992, no more than one-quarter of them were based on books published in country Z in 1991.

Which one of the following, if assumed, allows the conclusion above to be properly drawn?

(A) None of the scripts used in films released in 1992 were written by professional novelists.

(B) None of the films released in country Z in 1992 were based on books other than novels.

(C) None of the books that were published in country Z in 1992 were based on plots of films released in 1991.

(D) Some of the films released in country Z in 1992 were based on older films that had been released for the first time many years earlier.（B）

(E) Some of the films released in 1991 in country Z were based on novels that were published in 1991.

1991年出版的5万本书里5000本是小说。1992年发行的100部电影里，25部是根据这些小说改编的。所以只有四分之一的电影（no more than one-quarter）were based on books published in 1991

1。这里的books 应该换成novels 吧？ stimulus 中的novels 应该是books 的子集呀，二者不应该相等的吧？

2。

"是不是可以理解成： all films released in 1992 were based on novels, not on books."--------No. Novels are books, as you said. B simply means "if a film released in 1992 is based on a book, the book must be a novel"

"这里的books 应该换成novels 吧"-------this is the loophole of the argument. B gets rid of the loophole.

Oh, I see.

I misunderstood( B )None of the films released in country Z in 1992 were based on books other than novels

I had thought it meant "all of the films realeased in country Z in 1992 were based on novels."

Thanks ,Chaseayang.