The following are multiple choice questions (with answers) about medical knowledge.   **Question:** CEREC AC which is true   (A) Creates the image by video recording   (B) Laser beam is used   (C) LED is used   (D) Composite metal resin alloy etc
['(C) LED is used <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Creates the image by video recording \n (B) Laser beam is used \n (C) LED is used \n (D) Composite metal resin alloy etc <> possible answers', '  CEREC AC which is true <> context@']