The following are multiple choice questions (with answers) about medical knowledge.   **Question:** What is common in class I cavity preparation for amalgam and gold inlay?   (A) Buccolingually divergent walls   (B) Mesiodistally divergent walls   (C) Maximum depth is needed in both cases to provide sufficient thickness   (D) All of the above
['(B) Mesiodistally divergent walls <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Buccolingually divergent walls \n (B) Mesiodistally divergent walls \n (C) Maximum depth is needed in both cases to provide sufficient thickness \n (D) All of the above <> possible answers', '  What is common in class I cavity preparation for amalgam and gold inlay? <> context@']