A 68-year-old man admitted with pneumonia develops a rise in serum creatinine from 90 µmol/L at baseline to 210 µmol/L over 48 hours. His urine output is 0.3 mL/kg/hour. What is the most appropriate immediate management priority?AStart high-dose loop diuretics to improve urine outputBStop nephrotoxic medications and optimise fluid statusCArrange urgent dialysisDInsert a urinary catheter and do nothing elseEDischarge with outpatient renal follow-upCheck my answer