A nurse is reinforcing teaching about self-administration of insulin with a parent of a school-age child who has a new diagnosis of diabetes mellitus. Which of the following statements by the parent indicates a need for further teaching?

A. This statement is appropriate for school-age children using standard subcutaneous insulin injection techniques, especially with shorter needles. A 90-degree angle ensures the insulin is delivered into the subcutaneous tissue rather than muscle, which allows for consistent absorption. B. This statement indicates a need for further teaching. Aspiration (pulling back the plunger to check for blood) is not recommended for subcutaneous insulin injections, as it is unnecessary and can increase pain or tissue trauma. Modern guidelines advise injecting directly into the subcutaneous tissue without aspiration. C. This statement is appropriate. Rotating injection sites within the same general area prevents lipodystrophy (thickened or atrophied subcutaneous tissue) and ensures consistent insulin absorption. D. This statement is appropriate. Subcutaneous insulin injections can be administered in areas with adequate subcutaneous fat, such as the abdomen, outer thigh, upper arm, or buttocks, with site rotation to prevent tissue damage and maintain consistent absorption.