Statement and Assumption - Verbal and Reasoning

Q1:

Statement: Whenever you have any doubt on this subject, you may refer to the book by Enn and Enn. Assumptions:
  1. The book by Enn and Enn is available.
  2. There is no other book on this subject.

A Only assumption I is implicit

B Only assumption II is implicit

C Either I or II is implicit

D Neither I nor II is implicit

E Both I and II are implicit

ANS:A - Only assumption I is implicit

Explanation: The recommendation of the book by Enn and Enn implies that it is available. So, I is implicit. Also, the book has been referred to as a good one, but this does not mean that no other books are available on the subject. So, II is not implicit.