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

A. Warm, dry skin is more commonly associated with hyperglycemia, not hypoglycemia. B. Increased thirst is a sign of hyperglycemia, not low blood glucose. C. Hypoglycemia typically causes tachycardia, not a drop in heart rate. D. Feeling sleepy or fatigued is a common manifestation of hypoglycemia due to the brain being deprived of glucose, indicating correct understanding.