This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
All of the following are microsomal enzyme inhibitors except 
Select and explain. 
A. Glucocoicoids, B. Cimetidine, C. Ciprofloxacin, D. INH
A: Glucocoicoids
Answer: A: Glucocoicoids 
Explanation: Other inhibitors- Ketoconazole, Metronidazole, Allopurinol, Erythromycin, OCPs, Omeprazole