Statement:
Read this book for the exam.
Assumptions:
I. This book is good for the exam.
II. The person is preparing for an exam.
Answer: A
The fact that this suggestion is given means that the book could be useful for the exam. Hence, assumption I follows. The person may be preparing for the exam or he may be the publisher of the book who makes this statement to gamer publicity. Hence, (II) is not implicit.