1.  Statement : A good book, even if costly, is sold.
Assumptions : 

I. Some books are better than others.
II. Most of the books are costly.

A. If only assumption I is implicit.
B. if only assumption is II implicit.
C. if either I or II is implicit.
D. if neither I nor II is implicit.
E. if both I and II is implicit.

Answer: Option A

Explanation:

The statement talks about a 'good' book. This means that some books may not be good. So, I is implicit. The words 'if costly' show that most books are not costly. So, II is not implicit.