This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
Drug not used in the treatment of Mycobacterium avium complex? 
Select and explain. 
A. Clarythromycin, B. Ethambutol, C. Azithromycin, D. Rifampicin
D: Rifampicin
Answer: D: Rifampicin 
Explanation: Rifabutin is preferred since MAC infection is generally associated with HIV and rifampicin has enzyme inducer activity with anti-HIV drugs.Ref: KD Tripathi 3rd ed; P: 750