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?

"I will increase the intensity of my exercise routine if my urine is positive for ketones."

"I should avoid injecting insulin into my thigh if I am going to go running."

"I should exercise first thing in the morning before eating breakfast."

"I will carry a complex carbohydrate snack with me when I exercise."