The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In heavy calculus formers, early plaque consists of Ca, PO4 and k in what proportions:   (A) Calcium > phosphorous > potassium   (B) Phosphorous > potassium > calcium   (C) Phosphorous > calcium > potassium   (D) Potassium > phosphorous > calcium
['(C) Phosphorous > calcium > potassium <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Calcium > phosphorous > potassium \n (B) Phosphorous > potassium > calcium \n (C) Phosphorous > calcium > potassium \n (D) Potassium > phosphorous > calcium <> possible answers', '  In heavy calculus formers, early plaque consists of Ca, PO4 and k in what proportions: <> context@']