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: Physiology
Fibres least susceptible to pressure are: 
Select and explain. 
A. A, B. B, C. C, D. D
C: C
Answer: C: C 
Explanation: Relative susceptibility of mammalian A, B and C nerve fibers to conduction block produced by various agents: