input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** After amalgam polishing, the outermost surface has crystals arranged flattened to tooth surface. This layer is known as   (A) Beilby layer   (B) Beillyl layer   (C) Beibyl Layer   (D) none of the above
output: ['(A) Beilby layer <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Beilby layer  (B) Beillyl layer  (C) Beibyl Layer  (D) none of the above <> possible answers', '  After amalgam polishing, the outermost surface has crystals arranged flattened to tooth surface. This layer is known as <> context']