This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
In human genome project, scientist notices that one strand of the DNA molecule contains 20 thymine (T), 25 cytosine (C), 30 guanine (C) and 22 adenine (A) residues. How many of each of the bases are found in the complete double-stranded molecule? 
Select and explain. 
A. T-44, C=60, G=50, A=40, B. T-22, C=30, G=25, A=20, C. T-40, C=50, G=60, A=44, D. T-42, C=55, G=55, A=42
D: T-42, C=55, G=55, A=42
Answer: D: T-42, C=55, G=55, A=42 
Explanation: Question repeated