A 55-year-old man with chronic knee pain worse on activity, crepitus and X-ray changes of osteoarthritis asks about treatment. Which intervention provides the greatest long-term benefit in reducing pain and improving function?AParacetamol alone at maximum doseBIntra-articular corticosteroid injections every monthCLong-term opioid analgesiaDWeight loss and regular quadriceps-strengthening exerciseERoutine arthroscopic debridement for all patientsCheck my answer