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: Unknown
[{'content': 'Not an intravenous anesthetic - \nSelect and explain. \nA. Etomidate, B. Thiopentone, C. Ketamine, D. Cyclopropane', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'c' i.e., Cyclopropane Anaesthetics| |InhalationIntravenous||||GasLiquidsInducing agentsSlower actingN2Oo Ethero Halothaneo Isofluraneo Enfluraneo Sevofluraneo Desfluraneo Thiopentoneo Methohexitoneo Propofolo Etomidateo Ketamineo Benzodiazepineso Opioidso Dissociative anaesthesia# Ketamine", 'role': 'assistant'}]