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: Social & Preventive Medicine
[{'content': 'Which vaccine(s) is/are not contraindicated in pregnancy ? \nSelect and explain. \nA. Rubella, B. Varicella, C. Hepatitis B, D. Measles', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Hepatitis B", 'role': 'assistant'}]