Given below are two statements one labelled as Assertion (A) and the other labelled as Reason (R) -Assertion (A): The Central service officers are not all India Service Officers, but the nature of their job and postings make them truly all India in character. Reason: (R):--Unlike officers of the All -India services, central service officer's do not work under the state governments while working in the states.

• 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 correctexplanation of (A)
• C. (A) is true, but (R) is false
• D. (A) is false, but (R) is true