Assertion (A) The time period for the orbit of the Sun by the planet Mars is less than the time taken by the Earth to orbit the Sun. Reason (R) The diameter of Mars is less than that of 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