Which Statement Below Best Explains Why the Density of Water $\degree$

Which statement below best explains why the density of water decreases as it is cooled from 4.0 $\degree$ C to its normal freezing point?

A) Water molecules decrease in size as they cool because energy is released.
B) A regular, repeating network of hydrogen bonds between water molecules is formed.
C) Water molecules become more rigid as they cool.
D) Hydrogen bonds in liquid water are longer than they are in ice.
E) All substances contract just before freezing.