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': 'Half-life of digoxin is? \nSelect and explain. \nA. 24 hours, B. 40 hours, C. 48 hours, D. 60 hours', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Digoxin half-life is long -40 hrs It gets trapped in muscles and vd -volume of distribution is more elimination is difficult in cases of poisoning Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]