This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
Awakening from a single bolus dose in rapid from Propofol due to;- 
Select and explain. 
A. Redistribution, B. Excretion, C. Biotransformation, D. D- Methylation
A: Redistribution
Answer: A: Redistribution 
Explanation: It is redistributed from the brain to tissues which are less perfused like muscles, resulting in rapid recovery within 20 minutes. All intravenous anaesthetic agent undergo rapid redistribution. Thus awakening from Thiopentone, Propofal, Etomidate, ketamine is very fast.