This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
In spinal anesthesia is the drug is deposited between 
Select and explain. 
A. Dura and Arachnoid, B. Pia and Arachnoid, C. Dora and veebrae, D. Into the cord substance
B: Pia and Arachnoid
Answer: B: Pia and Arachnoid 
Explanation: Refer Katzung 10/e p 419. In spinal anesthesia ,drug is deposited in the sub Arachnoid space.,,whereas in epidural anesthesia, it is given outside the duramater