input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Most metabolically active layer in the bone is:   (A) Periosteum   (B) Endosteum   (C) Cancellous bone   (D) Coical bone
output: ['(B) Endosteum <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Periosteum  (B) Endosteum  (C) Cancellous bone  (D) Coical bone <> possible answers', '  Most metabolically active layer in the bone is: <> context']