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: Medicine
[{'content': 'Which of the following hepatitis virus have significant perinatal transmission? \nSelect and explain. \nA. HEV, B. HCV, C. HBV, D. HAV', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]