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': 'Wide QRS duration is - \nSelect and explain. \nA. > 0.8sec, B. > 0.9 sec, C. >0.12 Sec, D. >0.05 Sec', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]