The nurse is instructing the mother of a school-age child with a leg cast about cast care at home. What should the nurse include in this teaching? Select all that apply

Rationale: A. Nothing should be inserted into the cast to avoid skin injury or infection. B. Covering the cast with a plastic bag during bathing helps keep it dry. C. Using a cool hair dryer can relieve itching without damaging the cast or skin. D. Magic markers can stain the cast; washable markers or cast-safe autograph pens are preferred. E. Usual activities are encouraged to maintain mobility, but strenuous activities that could damage the cast or injury the child should be restricted.