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
Commonest symptom of pheochromocytoma is 
Select and explain. 
A. Palpitation, B. Headache, C. Sweating, D. Dyspnoea
B: Headache
Answer: B: Headache 
Explanation: Ans. is 'b' i.e., Headache Hypeension is the most common symptom of pheochromocytoma followed by headache > Sweating > Palpitation.