This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Pharmacology
[{'content': 'Prolonged use of the following drug has been implicated in the causation of suacute myelo-optic neuropathy (SMON): \nSelect and explain. \nA. Diloxanide furoate, B. Quiniodochlor, C. Emetine, D. Furazolidone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref: KDT 6/e p802) 8-hydroxyquinolones like quiniodochlor can result in SMON.', 'role': 'assistant'}]