This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanisms of Enzyme Action, Subject name: Biochemistry
Digestive enzymes are - 
Select and explain. 
A. Hydrolases, B. Oxidoreductases, C. Dehydrogenases, D. Ligases
A: Hydrolases
Answer: A: Hydrolases 
Explanation: Ans. is 'a' i.e., Hydrolases {Ref: Harper's 29th/ep. 518-19]o All digestive enzymes are hydrolases.