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
Addition of water in C–C bond is by the enzyme 
Select and explain. 
A. Hydroxylase, B. Dehydrogenase, C. Hydrolase, D. Hydratase
C: Hydrolase
Answer: C: Hydrolase 
Explanation: Hydrolases catalyze the cleavage of C-O, C-N, C-C and some other bonds with the addition of water. 
In biochemistry, a hydrolase or hydrolytic enzyme is an enzyme that catalyzes the hydrolysis of a chemical bond. For example, an enzyme that catalyzed the following reaction is a hydrolase:
A–B + H2O → A–OH + B–H