input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Oil red '0' stain is used for:   (A) Glutaraldehyde fixed specimen   (B) Alcohol fixed specimen   (C) Formalin fixed specimen   (D) Frozen specimen
output: ['(D) Frozen specimen <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Glutaraldehyde fixed specimen  (B) Alcohol fixed specimen  (C) Formalin fixed specimen  (D) Frozen specimen <> possible answers', "  Oil red '0' stain is used for: <> context"]