A nurse is reinforcing teaching about cast care to a school-age child following application of a fiberglass cast for a radius fracture. Which of the following statements by the child indicates an understanding of the teaching?

"I should expect some tingling in my fingertips the first few days."

"I can put an ice pack on the areas of my cast that itch."

"I should expect the cast to be dry in 2 days."

"I can let my arm hang down for 1 hour at a time every 4 hours."