A nurse is reinforcing teaching with the guardian of a preschooler who has varicella and is hospitalized. Which of the following statements by the guardian indicates an understanding of the teaching?

A. Bedrest is not specifically required for children with varicella; activity should be based on the child's energy levels and comfort. B. Bathing can be done carefully even with crusted lesions. Good hygiene can help prevent secondary infections. C. If the guardian has had chickenpox, they are usually immune and do not need to wear a mask. The concern is more for immunocompromised individuals. D. The child is no longer contagious once all the lesions have crusted over, making it safe to take them to the playroom.