This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'Route of administration of amyl nitrite in cyanide poisoning is \nSelect and explain. \nA. Sublingual, B. Inhalational, C. Intravenous, D. Intramuscular', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Amyl nitrite is usually given in cyanide poisoning by inhalational route.', 'role': 'assistant'}]