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
Which of the following nerve fibers are first to get blocked by local anaesthetic 
Select and explain. 
A. A alpha, B. A beta, C. A delta, D. A gamma
C: A delta
Answer: C: A delta 
Explanation: Sequence of block is
Beta > A delta = C > A gamma > A beta >A alpha