The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Percentage of Phosphoric acid where Dicalcium phosphate monohydrate is formed that cannot be rinsed off.   (A) 25%   (B) 37%   (C) 50%   (D) 85%
['(A) 25% <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 25% \n (B) 37% \n (C) 50% \n (D) 85% <> possible answers', '  Percentage of Phosphoric acid where Dicalcium phosphate\nmonohydrate is formed that cannot be rinsed off. <> context@']