A 52-year-old man has a body mass index (BMI) of 33 kg/m². He has impaired fasting glucose but no established diabetes or cardiovascular disease. According to Australian obesity guidelines, what is the most appropriate first-line management?AAdvise lifestyle modification including diet, physical activity and behavioural strategies, with regular follow-upBStart long-term pharmacological appetite suppressants without lifestyle changesCRefer directly for bariatric surgery as first-lineDReassure that no action is needed until BMI exceeds 40 kg/m²EPrescribe a very-low-calorie diet for the rest of his life without supervisionCheck my answer