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': 'Which of the following anticancer drug is excreted by lungs ? \nSelect and explain. \nA. 5–Fluorouracil, B. Cyclophosphamide, C. Doxorubicin, D. Cisplatin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 5-Fluorouracil is rapidly metabolized in liver to produce biologically inactive metabolites which are eventually con\xadverted to carbon dioxide and eliminated by lungs.\nExcretion of 80% of 5-FU can be accounted for by conversion to carbon dioxide within 12 hour of administration though its excretion in urine is only 15%.\nAlso note other drugs excreted by lungs are procainamide, procaine and antipyrine.', 'role': 'assistant'}]