A planet of mass m is moving in an elliptical orbit about the sun (mass of sun = M). The maximum and minimum distances of the planet from the sun are `r_(1)` and `r_(2)` respectively. The period of revolution of the planet wil be proportional to :

Options

A. `r_(1)^(3//2)`
B. `r_(2)^(3//2)`
C. `(r_(1)-r_(2))^(3//2)`
D. `(r_(1)+r_(2))^(3//2)`

Answer

D