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: Surgery
[{'content': 'Malakoplakia of the bladder is associated with \nSelect and explain. \nA. Smoking, B. Aniline dye, C. Defect in phagocytosis, D. Contrast dye', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It is an inflamatory condition caused by defect in phagocytosis.', 'role': 'assistant'}]