This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
[{'content': 'If the 4% of thymine residues in DNA is 28% what is the % of cystosine \nSelect and explain. \nA. 28%, B. 44%, C. 36%, D. 22%', 'role': 'user'}, {'content': 'Answer: D \nExplanation: this is solved acc to chargaff rules = A+T+G+C=100% REF : LIPINCOTT BIOCHEMISTRY', 'role': 'assistant'}]