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
[{'content': 'In spinal anesthesia is the drug is deposited between \nSelect and explain. \nA. Dura and Arachnoid, B. Pia and Arachnoid, C. Dora and veebrae, D. Into the cord substance', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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', 'role': 'assistant'}]