At 10 Atm Pressure, Ice (Solid H₂O)floats in Water Instead of of Sinking

At 1.0 atm pressure, ice (solid H₂O) floats in water instead of sinking. The reason for this is

A) when water freezes, it expands instead of contracting.
B) the fusion process is endothermic, therefore the solid will float.
C) the triple point has a lower temperature than the freezing point for water.
D) the critical temperature has a higher temperature than the normal boiling point.
E) the triple point corresponds to a pressure below 1 standard atmosphere.