During science lab, Carl notices that when he adds water to his solid sample of anhydrous copper sulfate, CuSO4, his reaction vessel becomes warm and a blue solution forms. Describe what is happening.

A) The disappearance of the solid sample heats and colors the water with copper sulfate molecules.
B) Absorption of heat from the surroundings heats the beaker causing the copper sulfate molecules to dissipate.
C) Dissolving copper sulfate is an exothermic process that heats up the surroundings including the reaction beaker.
D) The dissociation of copper sulfate into ions is an exothermic chemical reaction that releases heat into the surroundings.