This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'Features of Torsade de pointes is- \nSelect and explain. \nA. Wide QRS complex, B. Sho QRS complex, C. Prolonged QTc interval, D. Sho QTc interval', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Torsades de pointes is a specific form of polymorphic ventricular tachycardia in patients with a long QT interval. It is characterized by rapid, irregular QRS complexes, which appear to be twisting around the ECG baseline. Ref Harrison 20th edition pg 1545', 'role': 'assistant'}]