input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is not true for myelinated nerve fibers:   (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
output: ['(A) Impulse through myelinated fibers is slower than non-myelinated fibers <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(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 <> possible answers', '  Which of the following is not true for myelinated nerve fibers: <> context']