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
Incubation period of cholera is ? 
Select and explain. 
A. 1-2 days, B. 7-10 day, C. 10-14 days, D. 3-5 weeks
A: 1-2 days
Answer: A: 1-2 days 
Explanation: Ans. is 'a' i.e., 1-2 days