This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenal Gland, Subject name: Pathology
Which one of the following is not seen in pheochromocytoma? 
Select and explain. 
A. Episodic hypeension, B. Arrhythmias, C. Headaches, D. Diarrhea
D: Diarrhea
Answer: D: Diarrhea 
Explanation: #NAME?