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': 'Water based disease is \nSelect and explain. \nA. Dracunculiasis, B. Scabies, C. Typhoid, D. Malaria', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]