A nurse is reinforcing teaching about exercise with a client who has type 1 diabetes mellitus. Which of the following statements by the client indicates an understanding of the teaching?

A. "I will increase the intensity of my exercise routine if my urine is positive for ketones.": Presence of urinary ketones indicates poor glucose control/possible ketosis; exercise is contraindicated because it can worsen ketoacidosis. B. "I should avoid injecting insulin into my thigh if I am going to go running.": Exercise increases blood flow to the active muscles and increases absorption of insulin injected into those muscles; to avoid unexpectedly rapid absorption and hypoglycemia, do not inject into a site you will vigorously use. C. "I should exercise first thing in the morning before eating breakfast.": Exercising in the fasting state increases hypoglycemia risk unless insulin/food adjustments are planned. D. "I will carry a complex carbohydrate snack with me when I exercise.": When hypoglycemia is a risk during exercise, patients should carry a fast-acting (simple) carbohydrate (juice, glucose tablets, candy), not a complex carbohydrate which acts more slowly.