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': 'Diffusion of oxygen at the tissue level is affected in all the following poisoning except - \nSelect and explain. \nA. Carbon monoxide, B. Curane, C. Phosgene, D. Cyanides', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Peripheral nerve poison, e.g. curare Asphyxiants, e.g. carbon monoxide,CO2,H2S,phosgene(war gas),cyanides REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;PAGE NO 361', 'role': 'assistant'}]