This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'All are true regarding METHANOL poisoning except: \nSelect and explain. \nA. Hemodialysis should be done when serum methanol cencentration is above 50 mg/dl, B. Fomepizole acts by inhibiting aldehyde dehydrogenase, C. High anion gap metabolic acidosis is seen in severe cases, D. Visual disturbances are commonly seen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: Katzung 12/e p398 Fomepizole inhibits alcohol dehydrogenase and not aldehyde dehydrogenase *Serum methanol concentration above 20 mg/dl is an indication to sta treatment and above 50 mg/dl is for Hemodialysis. *Metabolic product formaldehyde and fornic acid is responsible for blindness and high anion gap metabolic acidosis.', 'role': 'assistant'}]