This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenal Cortex and Medulla, Subject name: Pathology
Which is produced by Phaeochromocytoma in M.E.N 2A Sipple syndrome? 
Select and explain. 
A. Epinephrine, B. Norepinephrine, C. Dopamine, D. 5- H.I.
A: Epinephrine
Answer: A: Epinephrine 
Explanation: Ans. (a) EpinephrineRef: Robbin's pathology 9th ed. /1134-36* Phaeochromocytoma < 5 cm and associated with MEN 2A can produce epinephrine due to sufficient methy transferase enzyme.* However if phaeochromocytoma > 5 cm and in extradrenal phaeochromocytoma due to absence of methyl trans- ferase enzyme, only nor-epinephrine is produced.