When a Box Rests on a Round Sheet of Wood $\sqrt { 2 }$

When a box rests on a round sheet of wood on the ground,it exerts an average pressure p on the wood.If the wood is replaced by a sheet that has half the diameter of the original piece,what is the new average pressure?

A) 4p
B) 2p
C) p $\sqrt { 2 }$
D) p/2
E) p/4