Task: Question Answering
Input (English): A 36-year-old male presents to the office with a 3-week history of low back pain. He denies any recent trauma but says that he climbs in and out of his truck numerous times a day for his job. Examination of the patient in the prone position reveals a deep sacral sulcus on the left, a posterior inferior lateral angle on the right, and a lumbosacral junction that springs freely on compression. The most likely diagnosis is
(A)left-on-left sacral torsion (B)left-on-right sacral torsion (C)right unilateral sacral flexion (D)right-on-right sacral torsion
Output (English): D