This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
HBV and HDV false is - 
Select and explain. 
A. Both can infect simultaneously, B. HDV causes more serious infection d/t superinfection, C. HDV cannot infect in absence of HBV, D. DNA viruses
D: DNA viruses
Answer: D: DNA viruses 
Explanation: HBV is a DNA virus& HDV is an RNA virus.HDV&HBV is co-infection HIV causes more serious infection due to superinfection REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.549