This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
Alcohol Dehydrogenase comes under which class of enzyme? 
Select and explain. 
A. Oxidoreductase, B. Dehydrogenase, C. Hydrolase, D. Oxidase
A: Oxidoreductase
Answer: A: Oxidoreductase 
Explanation: Ans. A. OxidoreductaseHere the question is asking about class of enzyme, hence answer oxidoreductase. Dehydrogenase is the subclass not class of enzyme.