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: Pharmacology
[{'content': 'DEC (Di–ethyl–carbamazine) is used for the treatment of : \nSelect and explain. \nA. Filariasis, B. Dracunculiasis, C. Schistosomiasis, D. Taeniasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]