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
[{'content': 'Fulminant infection in pregnancy is due to: \nSelect and explain. \nA. HEV, B. HDV, C. HAV, D. HBV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. HEVFulminant hepatitis caused by Hepatitis-E virusFulminant 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).', 'role': 'assistant'}]