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: Biochemistry
[{'content': "In which condition vanillylmandelic acid is excreted in urine \nSelect and explain. \nA. Gaucher's disease, B. Phenylketonuria, C. Pheochromocytoma, D. Hartnup's disease", 'role': 'user'}, {'content': 'Answer: C \nExplanation: In Pheochromocytoma, increased and uncontrolled synthesis of catecholamines takes place.\nThe breakdown product of catecholamines is vanillymandelic acid, and thats get excreted in urine.', 'role': 'assistant'}]