A 28-year-old man with new lower back pain and urinary retention after a fall has saddle anaesthesia and decreased anal tone on examination. According to Canadian spine emergency principles, what is the most appropriate next step?AReassure and provide analgesia onlyBOrder urgent MRI of the lumbosacral spine and consult neurosurgery for suspected cauda equina syndromeCArrange outpatient physiotherapyDOrder plain lumbar radiographs onlyEStart NSAIDs and review in 2 weeksCheck my answer