If `a` and `b` are the nearest and farthest distances of a planet from the sun and the planet is revolving in an elliptical orbit, then square of the time period of revolution of that planets is directly proportional to

Options

A. `a^(3)`
B. `b^(3)`
C. `(a+b)^(3)`
D. `(a-b)^(3)`

Answer

C

Explanation

From kepler's `3rd` law, `T^(2) propr^(3)`