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: Pharmacology
Prolonged use of the following drug has been implicated in the causation of subacute myelo–optic neuropathy (SMON) : 
Select and explain. 
A. Diloxanide furoate, B. Quiniodochlor, C. Emetine, D. Furazolidone
B: Quiniodochlor
Answer: B: Quiniodochlor 
Explanation: None