A client who has type 1 diabetes mellitus asks a nurse about beginning an exercise regimen. Which of the following instructions should the nurse include?

A. Exercising when insulin is at its peak action is incorrect. Exercising during peak insulin activity increases the risk of hypoglycemia. It is best to exercise when insulin levels are more stable, such as 1 to 2 hours after a meal. B. Eating a piece of fruit before exercising is correct. A small carbohydrate snack before exercise helps prevent hypoglycemia, especially for clients with type 1 diabetes. The body requires glucose for energy, and exercise can lower blood sugar levels rapidly. C. Injecting additional insulin before exercising is incorrect. Exercise naturally lowers blood glucose, so adding extra insulin increases the risk of hypoglycemia. Instead, insulin doses may need to be adjusted downward based on activity levels. D. Avoiding protein before exercising is incorrect. While carbohydrates are the primary concern, protein intake before exercise is not harmful and can support muscle function. However, the focus should be on carbohydrate intake to maintain blood glucose levels.