A 54-year-old man with chronic low back pain and new right foot drop, saddle anaesthesia and urinary retention presents to a rural emergency department. What is the most appropriate immediate action?AOrder lumbar spine radiographs and review tomorrowBUrgent MRI and neurosurgical consultation for possible cauda equina syndromeCStart opioids and discharge with follow-upDTrial of physiotherapy before imagingEArrange outpatient neurology referral in 6 weeksCheck my answer