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
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 Characteristic feature of different Hepatitis viruses . HEV - Causes fulminant hepatitis in pregnant woman - Causes cholestasis . HAV - Cause spiky fever - Can cause cholestasis (less common than HEV) . HBV - Only hepatitis virus which is DNA virus. . HCV - Paucity of inflammation - Causes fatty change in liver. - Episodic pattern of aminotransferases activity.