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
Which of the following is/are transfusion transmitted viruses - 
Select and explain. 
A. Hepatitis B, B. CMV, C. HTLV -1 HHV - 8, D. All
D: All
Answer: D: All 
Explanation: Ans. is `a' i.e., Hepatitis - B; 'b' i.e., CMV; `c' i.e., HTLV-1