Which Statement Is TRUE in Describing What Occurs When a Solid

Multiple Choice

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

A) The process is endothermic and the heat of fusion is positive.
B) The process is endothermic and the heat of fusion is negative.
C) The process is exothermic and the heat of fusion is positive.
D) The process is exothermic and the heat of fusion is negative.
E) not enough information