Assertion (A) Always one integral face of the moon is facing towards the earth. Reason (R) The moon completes its rotation on its axis in 57/2 days, which is approximately the same period in which it completes the revolution of the earth.

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R and R is not the correct explanation of A.
• C. A is right but R is wrong
• D. A is wrong but R is right