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: Medicine
[{'content': 'Torsades de pointes causes ? \nSelect and explain. \nA. Eide QRS, B. Short QRS, C. Wide QT, D. Short QT', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]