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
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: In spinal anesthesia LA is injected into subarachnoid space (space between pia matter and arachnoid matter).