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
Not an intravenous anesthetic - 
Select and explain. 
A. Etomidate, B. Thiopentone, C. Ketamine, D. Cyclopropane
D: Cyclopropane
Answer: D: Cyclopropane 
Explanation: 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