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
[{'content': 'In TB meningitis which drug is not used in the treatment protocol - \nSelect and explain. \nA. Streptomycin, B. Rifampicin, C. Ethambutol, D. Pyrazinamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]