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: Gynaecology & Obstetrics
[{'content': 'Vaccine routinely given in pregnancy : \nSelect and explain. \nA. Influenza, B. Oral polio, C. Tetanus, D. Rabies', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tetanus', 'role': 'assistant'}]