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
False statement about pheochromocytoma - 
Select and explain. 
A. 10% are bilateral, B. Arises from chromaffin cells, C. Extra adrenal tumor -increased nor adrenaline levels, D. None
D: None
Answer: D: None 
Explanation: Ans. is 'None'