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': 'An old patient of tubercular meningitis is not responding to treatment. A new combination of drugs has to be prescribed for a prolonged period. Which one of the following should not be prescribed in this case - \nSelect and explain. \nA. Rifampicin, B. Ofoxacin, C. Dehydrostreptomycin, D. Pyraxinamide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]