Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A): In 1946, the Muslim League withdrew its acceptance of the Cabinet Mission Plan.
Reason (R): The Muslim League joined the interim government formed in 1946.
Select the correct answer from the codes given below:

1. A.Both (A) and (R) are true and (R) is the correct explanation of (A)
2. B.Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3. C.(A) is true, but (R) is false
4. D.(A) is false, but (R) is true.