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
Tuohy needle is used for – 
Select and explain. 
A. Spinal anaesthesia, B. Epidural anaesthesia, C. CSF tapping, D. Biopsy
B: Epidural anaesthesia
Answer: B: Epidural anaesthesia 
Explanation: Tuohy needle is the most commonly used needle for epidural anesthesia. Other one is crawford needle.