This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional Anesthesia, Subject name: Anaesthesia
Tuohy's needle is used for: 
Select and explain. 
A. Spinal block, B. Epidural block, C. Saddle block, D. Brachial plexus block
B: Epidural block
Answer: B: Epidural block 
Explanation: This is tuohy needle used for epidural anaesthesia