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 anaesthesia the drug is deposited between: 
Select and explain. 
A. Dura and arachnoid, B. Pia and arachnoid, C. Dura and veebra, D. Into the cord substance
B: Pia and arachnoid
Answer: B: Pia and arachnoid 
Explanation: Local anesthetic is injected into sub arachnoid space between L2-3or L3-4 below the lower end of spinal cord. The drug acts on nerve roots. From padmaja 4th edition Page no 205