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
Property affected due to diameter of nerve fiber/axon? 
Select and explain. 
A. Conduction velocity, B. Refractory period, C. Latency period, D. Amplitude
A: Conduction velocity
Answer: A: Conduction velocity 
Explanation: With increasing diameter of nerve fiber leads to increase in its conduction velocity.