A nurse is reinforcing discharge teaching with the guardian of a preschooler who has a fiberglass arm cast. Which of the following statements by the guardian indicates an understanding of the teaching?

A. Saying that it is okay to use a pencil to scratch inside the cast is incorrect. Inserting objects inside the cast can cause skin irritation, abrasions, or even infection. Instead, the guardian should be advised to use a cool hairdryer or tap the cast lightly to relieve itching. B. Ensuring the child’s arm does not hang down for more than 30 minutes is correct. Keeping the arm elevated helps prevent swelling and improves circulation, which is especially important in the first few days after casting. Prolonged hanging of the arm can lead to increased swelling and discomfort. C. Avoiding movement of the fingers while the cast is in place is incorrect. The child should be encouraged to move their fingers to promote circulation and prevent stiffness. D. Submerging the cast in water for 5 minutes during bath time is incorrect. Even though fiberglass casts are water-resistant, prolonged exposure to water can damage the padding inside the cast and lead to skin irritation or infection. The guardian should keep the cast dry by covering it with a waterproof protector during bathing.