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: Pharmacology
Which of the following is not an enzyme inhibitor 
Select and explain. 
A. Isoniazid, B. Ketoconazole, C. Griseofulvin, D. Acute alcohol intoxication
C: Griseofulvin
Answer: C: Griseofulvin 
Explanation: Griseofulvin and chronic alcohol intoxication are enzyme inducers.