Change in volume of block

Question

A 200 x 100 x50 mm steel block is subjected to a hydrostatic pressure of 15 MPa. The Young’s
modulus and Poisson’s ratio of the material are 200 GPa and 0.3 respectively. The change in the
volume of the block in $_{mm^3}$ is

(a) 85          (b) 90           (c) 100           (d) 110