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': 'Which vaccine is not indicated during pregnancy? \nSelect and explain. \nA. Polio, B. Typhoid, C. Rubella, D. TT', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Rubella', 'role': 'assistant'}]