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: Unknown
VMA is elevated in which of the following condition: 
Select and explain. 
A. Pheochromocytoma, B. Conn’s syndrome, C. Carcinoid syndrome, D. Tuberous sclerosis
A: Pheochromocytoma
Answer: A: Pheochromocytoma 
Explanation: Ref. API Textbook of Medicine. Pg. 114
 
VMA is the end product of catabolism of catecholamines.

In pheochromocytoma and neuroblastoma there is excessive synthesis of catecholamines which causes enhanced synthesis of VMA and its excretion in the urine.
VMA is the urinary product of both epinephrine and norepinephrine.