The Difference Between a Hexose and a Pentose Is That

Multiple Choice

The difference between a hexose and a pentose is that:

A) a hexose is saturated, and a pentose is undersaturated.
B) a hexose is hydrophilic, and a pentose is hydrophobic.
C) a hexose always has six hydroxyl groups, and a pentose always has five.
D) a hexose always has six carbons, but a pentose always has five carbons.
E) a hexose can be polymerized, but a pentose cannot.