This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenal, Subject name: Medicine
Increased VMA is seen in? 
Select and explain. 
A. Pheochromocytoma, B. Tyrosinemia, C. Parkinsonism, D. Phenylketonuria
A: Pheochromocytoma
Answer: A: Pheochromocytoma 
Explanation: Ans. (a) PheochromocytomaRef: Harrison's 18th ed. ch.: 343