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': 'Drug that do not increase QT interval: \nSelect and explain. \nA. Amiodarone, B. Quinidine, C. Digitalis, D. Amitryptyline', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans is 'c' i.e. Digitalis o Digitals causes shoening of QT intervalo Other drugs (given in options) cause prolongation of QT interval.", 'role': 'assistant'}]