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
A nerve of 12 micrometer has a conduction velocity of 70ms, what will be the conduction velocity for a nerve of 10 micrometer: 
Select and explain. 
A. 60, B. 70, C. 80, D. 90
A: 60
Answer: A: 60 
Explanation: Greater the diameter of a given nerve fibre greater is the speed of conduction. Thus a nerve fiber of diameter 10 micrometer will have a conduction speed less than that of a 12 micrometer nerve. So 60 will be the right answer. Ref: Ganong's review of medical physiology, 21st Edition, page 60.