This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'True statement regarding ElTor vibrio is \nSelect and explain. \nA. ElTor is more common, B. ElTor is more severe, C. ElTor with more carriers, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: El Tor Vibrio:The severity of illness- much less, with a large propoion of mild and asymptomatic infectionsMoality was low and the carrier rate highEl Tor vibrio tended to remain endemic in many new geographic areas, causing periodic epidemicsProved to be much harder than the classical vibrios, capable of surviving in the environment for much longer(Ref: Ananthanarayan 9th edition, p308)', 'role': 'assistant'}]