Among the more effective kinds of publicity that publishers can get for a new book is to have excerpts of it published in a high-circulation magazine soon before the book is published. The benefits of such excerption include not only a sure increase in sales but also a fee paid by the magazine to the book’s publisher.
Which of the following conclusions is best supported by the information above?
(A) The number of people for whom seeing an excerpt of a book in a magazine provides an adequate substitute for reading the whole book is smaller than the number for whom the excerpt stimulates a desire to read the book.
(B) Because the financial advantage of excerpting a new book in a magazine usually accrues to the book’s publisher, magazine editors are unwilling to publish excerpts from new books.
(C) In calculating the total number of copies that a book has sold, publishers include sales of copies of magazines that featured an excerpt of the book.
(D) The effectiveness of having excerpts of a book published in a magazine, measured in terms of increased sales of a book, is proportional to the circulation of the magazine in which the excerpts are published.
(E) Books that are suitable for excerpting in high-circulation magazines sell more copies than books that are not suitable for excerpting. for building material by the present

please explain the reason for discarding the wrong ones.

A !

If excepts raise interest then the book sales will increase. If excerpts are enough to replace person's desire to read the book then it will reduce book sales (example: for a crime thriller, if the criminal identified in the excerpt, will you be interested to read the book).
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"Education is what remains when one has forgotten everything he learned in school."

reply to swagatlaxmi,

there are 2 things happening...
1. excerpt is getting published.
2. increase sale is happening.

in between missing is the asumption i.e., excerpt being published stimulates a desire to buy the book which is resulting in a increase in a sale.

so choice A looks like an assumption to me.this cant be the conclusion.


having said so,now 1 and 2 are premises and we have to draw a conclusion.
choice D looks the only alternative.

A as well , OA?