When liquid lemonade is placed in a freezer, its temperature slowly drops. Its molecules move less and less until they can only vibrate in a rigid structure.

Which of the following is another way to describe this process?

A.
Heat is removed from the lemonade, causing it to become a solid.
B.
Heat is added to the lemonade, causing it to become a solid.
C.
Heat is added to the lemonade, causing it to become a gas.
D.
Heat is removed from the lemonade, causing it to remain a liquid.