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A square plate is of mass \( M \) and length of edge equal to \( 2 a \). Its \( M l \) about its centre of mass axis, perpendicular to its plane is equal to \( \mathrm{I}_{0} \). Four identical disks are cut from the plane. The MI of leftover square about same axis is
(1) \( \left(1-\frac{15 \pi}{64}\right) I_{0} \)
(2) \( \left(1+\frac{15 \pi}{64}\right) I_{0} \)
(3) \( \frac{I_{0}}{4} \)
(4) None of these
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