Double-Stranded DNA Was Isolated from a Cryophilic Bacterium

Double-stranded DNA was isolated from a cryophilic bacterium. Which choice is MOST likely to represent a possible composition of its bases?

A) 30% A:T, 70% G:C
B) 50% A:T, 50% G:C
C) 70% A:T, 30% G:C
D) Any of these choices is a likely composition.
E) None of these choices is a likely composition.