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: Microbiology
[{'content': 'Mitsuda reaction is read after - \nSelect and explain. \nA. 3 days, B. 3 hours, C. 3 weeks, D. 3 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]