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': 'Live vaccines are -a)  TTb) BCGc)  DPTd)  OPVe)  MMR \nSelect and explain. \nA. dc, B. cbe, C. bde, D. eb', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]