In the 19th century James Joule, an English scientist, was the first to recognize the mechanical equivalent of heat as a specific form of the general rule of the conversion of one form of energy to another.

Which fact can be explained with the help of this law?
A) burning a fuel releases heat
B) heating a block of ice causes it to melt
C) a piece of iron glows red hot in a furnace
D) wood rubbed against a rough surface feels hot