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': 'Which is the calamity with most amount of damage - \nSelect and explain. \nA. Flood, B. Eahquake, C. Landslides, D. Volcanoes', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Floods", 'role': 'assistant'}]