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
Max. Hepatitis C virus transmission to foetus in pregnancy depends on - 
Select and explain. 
A. Duration of illness, B. Time of infection, C. Route of delivery, D. High level of HCV RNA
D: High level of HCV RNA
Answer: D: High level of HCV RNA 
Explanation: High levels of hepatitis C virus RNA indicates a higher chance of transmission to the fetus. REF:Textbook of microbiology, Ananthanarayan, and Paniker. Page no.:549