From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre ?

Question

( A ) $13 MR^2/32$
( B ) $15 MR^2/32$
( C ) $11 MR^2/32$
( D ) $9 MR^2/32$