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': 'Digoxin is contra indicated in: \nSelect and explain. \nA. Supraventricular tachycardia, B. Atrial fibrillation, C. Congestive heart failure, D. Hypertrophic obstructive cardiomyopathy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]