This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and Health, Subject name: Social & Preventive Medicine
[{'content': 'Epidemic dropsy is caused by \nSelect and explain. \nA. Sanguinarine, B. Ergot, C. Alkaloid, D. BOAA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Sanguinarine', 'role': 'assistant'}]