An assertion (A) and a reason (R) are given below.
Assertion (A): Agricultural activities are less on mountainous regions.
Reason (R): Mountains have less fertile terrain and difficult weather conditions.
Choose the correct option.

A

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

B

Both A and R are true, but R is not the correct explanation of A

C

A is true, but R is false

D

A is false, but R is true