A 72-year-old woman with knee osteoarthritis reports pain when walking but remains mobile. Examination shows crepitus and reduced range of movement, BMI 32 kg/m². What is the most appropriate first-line management?ARefer immediately for total knee replacementBStart strong opioidsCAdvise exercise, weight loss, and simple analgesia such as paracetamol or topical NSAIDsDPrescribe long-term oral corticosteroidsEAdvise complete rest of the jointCheck my answer