This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'Digoxin toxicity is increased by all except: \nSelect and explain. \nA. Renal impairment, B. Hyperkalemia, C. Hypercalcemia, D. Hypomagnesemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hypokalemia increases the binding of digoxin to Na-k ATPase and enhances its toxicity. Hypokalemia decreases digoxin toxicity Diuretics also interfere with the action of digoxin (REF. Essentials of medical pharmacology KD TRIPATHI 8th Edition)', 'role': 'assistant'}]