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
Gene responsible for INH resistance is ? 
Select and explain. 
A. KAT G, B. rpo B, C. pnc A, D. emb B
A: KAT G
Answer: A: KAT G 
Explanation: Ans. is 'a' i.e., KAT G