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': 'Time between infection and maximum infectivity is: \nSelect and explain. \nA. Incubation period, B. Serial interval, C. Generation time, D. Communicable period', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Generation time', 'role': 'assistant'}]