This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
[{'content': 'In methyl alcohol poisoning there is CNS depression, cardiac depression and optic nerve atrophy. These effects are produced due to - \nSelect and explain. \nA. Formaldehyde and formic acid, B. Acetaldehyde, C. Pyridine, D. Acetic acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Methanol itself is not toxic but two metabolites formed -- formaldehyde and formic acid are highly toxic. These compounds are responsible for causing profound metabolic acidosis and visual defect and blindness REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;PAGE NO 332', 'role': 'assistant'}]