This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adverse Drug Effect, Subject name: Pharmacology
[{'content': 'Which does NOT cause optic neuropathy \nSelect and explain. \nA. Penicillin, B. INH, C. Ethambutol, D. Chloramphenicol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Penicillin Drugs causing optic neuritis:Aminosalicylic acid - StreptomycinAmiodarone - PhenothiazinesChloramphenicol - PhenylbutazoneEthambutol - QuinineIsoniazid - Penicillamine", 'role': 'assistant'}]