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: Anaesthesia
Partition coefficient of gas – a) Measure of potencyb) Directly proportional to potencyc) Measures solubilityd) All of the above 
Select and explain. 
A. a, B. bc, C. ac, D. b
C: ac
Answer: C: ac 
Explanation: Minimum alveolar concentration (MAC) → Measure of Potency
Oil : gas partition coefficient (lipid solubility) → Measure of Potency
Blood : gas partition coefficient → measure blood solubility and speed of induction & recovery.