Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer:
Assertion (A) The salary and conditions of service of the Comptroller and Auditor-General of India cannot be varied to his/her disadvantages after his/her appointement.
Reason (R) The office of the CAG is a constitutional office.

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 explantion of A

C. A is ture, but R is false

D. A is false, but R is true

Answer: Option A