A 63-year-old man with diabetes and hypertension has an albumin-to-creatinine ratio of 15 mg/mmol on two occasions and eGFR 70 mL/min/1.73 m². Which of the following interventions is most important to slow the progression of diabetic nephropathy?AStrict protein restrictionBStart an ACE inhibitor or angiotensin receptor blocker and optimise blood pressure controlCAvoid all antihypertensive medicationsDDelay treatment until eGFR is less than 60 mL/min/1.73 m²EUse non-steroidal anti-inflammatory drugs for pain controlCheck my answer