This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2017, Subject name: Anaesthesia
Which of the following nerve fibre types is least susceptible to LA blockade? 
Select and explain. 
A. A beta, B. A alpha, C. B fibers, D. C fibers
B: A alpha
Answer: B: A alpha 
Explanation: Sensitivity of Local anesthetic To nerve fibers B > A 8 = C > Ag > Ab > Aa