A 43-year-old man presents with sudden severe epigastric pain radiating to the back and vomiting. Serum amylase is more than three times the upper limit of normal. Ultrasound shows gallstones. What is the most appropriate initial management?AImmediate ERCP in all casesBSupportive care with IV fluids, analgesia and nil by mouth, and treat precipitating causeCImmediate laparoscopic cholecystectomy during this admission without stabilisationDHigh-dose steroidsEOutpatient review onlyCheck my answer