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': 'Which of the following drug is deposited in muscle \nSelect and explain. \nA. Verapamil, B. Digoxin, C. Adenosine, D. Phenytoin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Refer kDT 6/e p 497 Some drugs accumulate in ceain tissues (for example, digoxin accumulates in hea and skeletal muscles), which can also act as reservoirs of extra drug. These tissues slowly release the drug into the bloodstream, keeping blood levels of the drug from decreasing rapidly and thereby prolonging the effect of the drug. Some drugs, such as those that accumulate in fatty tissues, leave the tissues so slowly that they circulate in the bloodstream for days after a person has stopped taking the drug', 'role': 'assistant'}]