The following are multiple choice questions (with answers) about medical knowledge.   **Question:** What is the most frequently used restorative material?   (A) Silicate   (B) Amalgam   (C) Composite   (D) Gold
['(B) Amalgam <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Silicate \n (B) Amalgam \n (C) Composite \n (D) Gold <> possible answers', '  What is the most frequently used restorative material? <> context@']