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: Forensic Medicine
Optic atrophy can be caused by poisoning -a) Phosphorusb) Ethyl alcoholc) Methyl alcohol d) Lead 
Select and explain. 
A. bc, B. c, C. ac, D. ad
A: bc
Answer: A: bc 
Explanation: Both methyl alcohol and ethyl alcohol can cause optic atrophy.