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
Lowest threshold potential in a motor nerve fibre is at: 
Select and explain. 
A. Dendrite, B. Body, C. Axon hillock, D. Axon
C: Axon hillock
Answer: C: Axon hillock 
Explanation: C i.e. Axon hillock