Practice question

A : Time interval at the dateline is 12 hours from the Greenwich. Reason (R): Dateline is situated at 180º meridian. Using following options choose the correct answer. [UPPCS (Pre) 1992] (A) (A), (R) both are correct and (R) is the correct explanation of (A) Correct B (A) and (R) both are correct, but (R) is not the correct explanation of (A) C (A) is correct, but (R) is false D (R) is correct, but (A) is false