Which of the Following Involves the Greatest Heat Transfer?
A) $\degree$

Which of the following involves the greatest heat transfer?

A) One gram of steam at 100 $\degree$ C changing to water at 100 $\degree$ C.
B) One gram of ice at 0 $\degree$ C changing to water at 0 $\degree$ C.
C) One gram of water cooling from 100 $\degree$ C to 0 $\degree$ C.
D) One gram of ice heating from -100 $\degree$ C to 0 $\degree$ C.