input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Best diagnostic investigation for acute appendicitis in children is:   (A) MRI   (B) CECT   (C) USG   (D) X-ray.
output: ['(C) USG <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) MRI  (B) CECT  (C) USG  (D) X-ray. <> possible answers', '  Best diagnostic investigation for acute appendicitis in children is: <> context']