input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Bacteria associated with caries are able to cause the same due to:   (A) Production of extxacellular polysaccharides like dextrans and levans   (B) Production of acid to hydrolyse diet carbohydrates   (C) Production of enzymes which inhibit normal flora   (D) Inhibition of secretory IgA
output: ['(A) Production of extxacellular polysaccharides like dextrans and levans <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Production of extxacellular polysaccharides like dextrans and levans  (B) Production of acid to hydrolyse diet carbohydrates  (C) Production of enzymes which inhibit normal flora  (D) Inhibition of secretory IgA <> possible answers', '  Bacteria associated with caries are able to cause the same due to: <> context']