Select from the following.
(a). Water evaporating;
(b). flooding;
(c). Water expanding;
(d). energy usage;
(e). Water melting;
(f). Water contracting;
(g). colder weather;
(h). massive damage;
Given those answer options, answer the question: Fact 1: When water freezes , that water expands. Fact 2: Water pipes can freeze and burst. Given the two facts above, why do pipes sometimes burst during the winter?
A:
(c).