input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Intensifying screen is used in extraoral radiograph to:   (A) Decrease radiation to patient   (B) Increase contrast   (C) Decrease contrast   (D) Collimation
output: ['(A) Decrease radiation to patient <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Decrease radiation to patient  (B) Increase contrast  (C) Decrease contrast  (D) Collimation <> possible answers', '  Intensifying screen is used in extraoral radiograph to: <> context']