The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Need for tooth separation is   (A) Diagnosis   (B) Cavity preparation   (C) Matrix placement   (D) All of the above
['(D) All of the above <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Diagnosis \n (B) Cavity preparation \n (C) Matrix placement \n (D) All of the above <> possible answers', '  Need for tooth separation is <> context@']