Stored Potatoes,beets,and Rutabagas Freeze at Temperatures Below Zero Degrees Celsius

Multiple Choice

Stored potatoes,beets,and rutabagas freeze at temperatures below zero degrees Celsius (rather than at exactly zero) because

A) they are good radiators of energy.
B) they are good absorbers of radiant energy.
C) the water in them contains dissolved salts and sugars.
D) they are very dense.
E) All of the above choices are true.