This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
All the following are Serine proteases, Except 
Select and explain. 
A. Chymotrypsin, B. Trypsin, C. Thrombin, D. Carboxy peptidase
D: Carboxy peptidase
Answer: D: Carboxy peptidase 
Explanation: Serine ProteasesTrypsinChymotrypsin AChymotrypsin BThrombinPlasminRef: Harper&;s Biochemistry; 30th edition; Chapter 7; Enzymes: Mechanism of Action