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 drugs is a P-glycoprotein inducer? 
Select and explain. 
A. Azithromycin, B. Ketoconazole, C. Itraconazole, D. Rifampicin
D: Rifampicin
Answer: D: Rifampicin 
Explanation: Answer- D. RifampicinRifampicin induces the isoenqymes CYP3A4, 2C8, 2C9, 2CI9, 286, and the transpoer P-glycoprotein. When coadministeredwith drugs that are substrates of the same enzymes, their metabolism may be accelerated resulting in lowerconcentration and less efficacy.Inducer-AmprenavirClotrimazoleDexamethasoneIndinavirMorphineNelfinavirPhenothiazineRetinoic acidRifampinRitonavirSaquinavirSt John's wo