This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis Viruses, Subject name: Microbiology
A young pregnant woman presents with fulminant hepatic failure. The most likely aetiological agent is: 
Select and explain. 
A. Hepatitis B virus, B. Hepatitis C virus, C. Hepatitis E virus, D. Hepatitis A virus
C: Hepatitis E virus
Answer: C: Hepatitis E virus 
Explanation: Ans. is 'c' i.e., Hepatitis E virus(Ref: Ananthanarayan, 9th/e, 550 and 8th/e, p. 546)* Fulminant hepatitis may occur rarely in 1 - 2% of cases, except for the pregnant women who are particularly at higher risk (20%) of developing fulminant hepatitis.