The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The amino acid, which is used in the estimation of collagen is:   (A) Hydroxyproline   (B) Proline   (C) Lysine   (D) Glycine
['(A) Hydroxyproline <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Hydroxyproline \n (B) Proline \n (C) Lysine \n (D) Glycine <> possible answers', '  The amino acid, which is used in the estimation of collagen is: <> context@']