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: Pharmacology
An i.v. bolus dose of thiopentone leads to loss of consciousness within 10–15 sec. The patient regains consciousness in just a few minutes. This is because it is: 
Select and explain. 
A. Renally excreted, B. Exhaled rapidly, C. Rapidly metabolised by hepatic enzymes, D. Redistributed from brain to other body tissues
D: Redistributed from brain to other body tissues
Answer: D: Redistributed from brain to other body tissues 
Explanation: Thiopentone and other highly lipid soluble agents first reach the highly perfused organs like the brain. Therefore, the onset of ac­tion of these agents is very quick. However, action also terminates quickly because of redistribution to less well-perfused tissues like fat and muscle.