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
[{'content': 'Over expression of InhA gene can lead to cross resistance of Isoniazid with: \nSelect and explain. \nA. Rifampicin, B. Ethambutol, C. Ethionamide, D. PAS', 'role': 'user'}, {'content': 'Answer: C \nExplanation: InhA gene overexpression can lead to cross resistance of\xa0Isoniazid with Ethionamide.\nKatA\xa0gene mutation : Severe form of Isoniazid resistance.', 'role': 'assistant'}]