This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Which of the following is/are transfusion transmitted viruses - \nSelect and explain. \nA. Hepatitis B, B. CMV, C. HTLV -1 HHV - 8, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `a' i.e., Hepatitis - B; 'b' i.e., CMV; `c' i.e., HTLV-1", 'role': 'assistant'}]