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
Which of the following is not true for myelinated nerve fibers: 
Select and explain. 
A. Impulse through myelinated fibers is slower than non-myelinated fibers, B. Membrane currents are generated at nodes of Ranvier, C. Saltatory conduction of impulses is seen, D. Local anesthesia is effective only when the nerve is not covered by myelin sheath
A: Impulse through myelinated fibers is slower than non-myelinated fibers
Answer: A: Impulse through myelinated fibers is slower than non-myelinated fibers 
Explanation: None