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: Biochemistry
Trypsin, Chymotrypsin & Elastases -What type of enzymes are they? 
Select and explain. 
A. Hydrolases, B. Lyases, C. Synthases, D. Synthetases
A: Hydrolases
Answer: A: Hydrolases 
Explanation: Ans. is 'a' i.e., HydrolasesAll digestive enzymes (trypsin, pepsin, elastase, chymotrypsin) are hydratases.