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: Medicine
Gene responsible for resistance to rifampicin 
Select and explain. 
A. Rpo B gene, B. Kat G gene, C. Rpm B gene, D. Emb B gene
A: Rpo B gene
Answer: A: Rpo B gene 
Explanation: Ans. is 'a' i.e., Rpo B gene ATT Drug Gene responsible for drug resistance INH inhA and Kat G gene Ethambutol emb B gene Rifampicin rpoB gene Pyrazinamide pncA gene