This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Neoplastic Agents, Subject name: Pharmacology
[{'content': 'Mode of excretion of cyclophosphamide is - \nSelect and explain. \nA. Lung, B. Liver, C. Kidney, D. Skin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Kidney [Ref: style="font-size: 1.04761904761905em; font-family: Times New Roman, Times, serif; margin: 0 0 8pt 8px; text-indent: 0; text-align: left">o Cyclophosphomide is primarily metabolized (80%) and metabolites are excerted in urine.o 10 to 20% is excreted unchanged in urine and 4% is excreted in bile.', 'role': 'assistant'}]