This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Human Immunodeficiency Virus, Subject name: Microbiology
HIV virus contains: 
Select and explain. 
A. Single stranded DNA, B. Single stranded RNA, C. Double stranded DNA, D. Double stranded RNA
B: Single stranded RNA
Answer: B: Single stranded RNA 
Explanation: Ans. is 'b' i.e., Single stranded RNA(Ref: Ananthanarayan, 9th/e, p. 571 and 8th/e, p. 570)* The genome in HIV is diploid, composed of two identical single stranded positive sense RNA copies.