Four spheres of diameter 2a and mass M are placed with their centres on the four corners of a square of side b. Then moment of inertia of the system about an axis about one of the sides of the square is :-

Options

A. `Ma^(2)+2Mb^(2)`
B. `Ma^(2)`
C. `Ma^(2)+4Mb^(2)`
D. `(8)/(5)Ma^(2)+2Mb^(2)`

Answer

D