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?

"The insulin should be injected at a 90-degree angle."

"I will be sure my child aspirates before injecting the insulin."

"I will be sure my child rotates sites after five injections in one area."

"The insulin can be injected anywhere there is adipose tissue."