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: Physiology
Which enzyme is not released as a proenzyme 
Select and explain. 
A. Elastase, B. Trypsin, C. Amylase, D. Chymotrypsin
C: Amylase
Answer: C: Amylase 
Explanation: Proenzyme of 
-        Elastase- Proelastase
-        Trypsin- Trypsinogen
-        Chymotrypsin- Chymotrypsinogen