Based on Chargaff's Rules, Which Base Compositions for Double-Stranded DNA

Multiple Choice

Based on Chargaff's rules, which base compositions for double-stranded DNA are possible? %A
%G
%C
%T
%U

A) 5
45
45
5
0
B) 20
20
20
20
20
C) 35
15
35
15
0
D) All of the answers are correct.
E) None of the answers is correct.