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
HIV envelope is formed by 
Select and explain. 
A. Host cell, B. Virus, C. Both, D. None
C: Both
Answer: C: Both 
Explanation: HIV Envelope is made up of Lipoprotein.
Lipid is derived from host cell and protein is virus encoded.