Two Metal Spheres Are Made of the Same Material and Have

Multiple Choice

Two metal spheres are made of the same material and have the same diameter, but one is solid and the other is hollow. If their temperature is increased by the same amount,

A) the solid sphere becomes less dense and the hollow one denser.
B) the solid sphere becomes bigger than the hollow one.
C) the solid sphere becomes denser and the hollow one less dense.
D) the two spheres remain of equal size.
E) the hollow sphere becomes bigger than the solid one.