A nurse is teaching an older adult client who has diabetes mellitus about preventing the long-term complications of retinopathy and nephropathy. Which of the following instructions should the nurse include?

A. Maintaining stable blood glucose levels is the most effective way to prevent long-term complications of diabetes, including retinopathy (eye damage) and nephropathy (kidney damage). B. Examining feet daily helps prevent foot ulcers and infections, which are important but more related to neuropathy, not retinopathy or nephropathy. C. Annual eye exams are important for early detection of retinopathy, but prevention primarily depends on good glucose control. D. Compression stockings help with venous circulation but are not related to preventing retinopathy or nephropathy.