Consider a thin uniform square sheet made of a rigid material. If its side is $'a'$, mass m and moment of inertia I about one of its diagonals, then :

Question

( A ) $I = \frac{ma^2}{24}$
( B ) $\frac{ma^2}{24} < I < \frac{ma^2}{12}$
( C ) $I = \frac{ma^2}{12}$
( D ) $I > \frac{ma^2}{12}$