au-amc MCQ (SBA): Diabetic kidney disease and hypertension

A 58-year-old man with type 2 diabetes and CKD stage 3a (eGFR 52 mL/min/1.73 m², ACR 30 mg/mmol) has blood pressure 152/92 mmHg on repeated readings. According to CKD guidelines, which class of antihypertensive is preferred first-line to slow CKD progression and reduce CVD risk, assuming no contraindications?