Moment of inertia of an annular disc about an axis passing through the centre and perpendicula to the plane of disc is

Options

A. `(M)/(2)(R_(1)^(2)+R_(2)^(2))`
B. `(M)/(2)(R_(1)^(2)-R_(2)^(2))`
C. `(2)/(M)(R_(1)^(2)+R_(2)^(2))`
D. `(2)/(M)(R_(1)^(2)-R_(2)^(2))`

Answer

A