Assertion (A): The Koyna region of Maharashtra is likely to become more earthquake prone in near future.

Reason (R): The Koyna dam is located on an old fault-plane which may get activated more frequently with changes in water-level in Koyna reservoir.

Select the correct answer using the codes given below:

A) Both A and R are true and R is the correct explanation of A

B) Both A and R are true bur R is not the correct explanation of A

C) A is true but R is false

D) A is false but R is true

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2001 (GS Paper I)