A nurse is teaching a group of patients about osteoarthritis.Which of the following recommendations should the nurse include in the teaching?

Choice A rationaleEchinacea is an herb often used to support the immune system, particularly for colds and flu. There is no strong scientific evidence to support its effectiveness in managing the joint pain associated with osteoarthritis, which is a degenerative joint disease.Choice B rationaleApplying ice to a joint before exercising can decrease pain and inflammation, but it can also stiffen the joint and potentially limit range of motion during activity. Heat application is generally recommended before exercise in osteoarthritis to warm up the muscles and tissues.Choice C rationalePurines are compounds that break down into uric acid. Reducing purine intake is important for managing gout, a type of inflammatory arthritis caused by the deposition of uric acid crystals in the joints, not osteoarthritis, which is characterized by cartilage breakdown.Choice D rationaleMaintaining a recommended body weight is crucial for managing osteoarthritis. Excess weight puts additional stress on weight-bearing joints like the hips and knees, accelerating cartilage breakdown and increasing pain. Weight loss can significantly reduce these stresses and alleviate symptoms.