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
One of the potent microsomal enzyme inducer drug is: 
Select and explain. 
A. Captopril, B. Erythromycin, C. Rifampicin, D. Cimetidine
C: Rifampicin
Answer: C: Rifampicin 
Explanation: None