This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
[{'content': 'The incubation period of mumps is- \nSelect and explain. \nA. 1 -2 weeks, B. 2-3 weeks, C. 3-4 weeks, D. 4-5 weeks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Incubation period of mumps is 2-3 wks Ref Harrison20th edition pg 897', 'role': 'assistant'}]