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
[{'content': 'Increased  velocity  of  conduction  in  a nerve is favored by: \nSelect and explain. \nA. Increased capacitance, B. Decreased capacitance, C. Increased resistance, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Velocity of conduction in a nerve is increased by myelination, increase in diameter (thick nerve) and capacitance and decrease in resistance.', 'role': 'assistant'}]