The following are multiple choice questions (with answers) about medical knowledge.   **Question:** High copper dental amalgams are superior to other amalgams because high copper dental amalgams:   (A) Have less marginal breakdown   (B) Are workable at lower Hg-alloy ratio   (C) Have a higher ratio of tensile to compressive strength   (D) Have less resistance to tarnish and corrosion
['(A) Have less marginal breakdown <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Have less marginal breakdown \n (B) Are workable at lower Hg-alloy ratio \n (C) Have a higher ratio of tensile to compressive strength \n (D) Have less resistance to tarnish and corrosion <> possible answers', '  High copper dental amalgams are superior to other amalgams because high copper dental amalgams: <> context@']