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
In spinal anaesthesia the drug is deposited between : 
Select and explain. 
A. Dura and arachnoid, B. Pia and arachnoid, C. Dura and vertebra, D. Into the cord substance
B: Pia and arachnoid
Answer: B: Pia and arachnoid 
Explanation: None