The % base pair values of four nucleic acid samples are provided below. Which one of the following samples has the highest Tm?
(A) A = 31; T = 21; G = 20; C = 28
(B) A = 26; T = 14; G = 34; C = 26
(C) A = 17; T = 19; G = 33; C = 31 Q.1
(D) A = 20; T = 30; G = 25; C = 25