input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** muscle spindle is   (A) Receptor for a variety of multisynaptic reflexes   (B) Receptor for stretch receptor reflex   (C) Occurs only in antigravity extensor muscles   (D) Excited by both stretch and contraction of the muscles in which it is located
output: ['(B) Receptor for stretch receptor reflex <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Receptor for a variety of multisynaptic reflexes  (B) Receptor for stretch receptor reflex  (C) Occurs only in antigravity extensor muscles  (D) Excited by both stretch and contraction of the muscles in which it is located <> possible answers', '  muscle spindle is <> context']