This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
[{'content': 'If somebody develops resistance to INH, patient will develop simultaneously resistance to which drug? \nSelect and explain. \nA. Streptomycin, B. Rifampicin, C. Ethambutol, D. Pyrazinamide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: KD Tripathi, 7th ed. pg. 767* Rifampicin is considered as effective as isoniazid. This agent is active against slow and intermittently dividing bacterium (spurters).* If someone develops resistance to INH, they are most likely to develop resistance to rifampicin as well.* In MDR-TB, there is resistance to INH and rifampicin.', 'role': 'assistant'}]