The nurse is caring for a client who is receiving teletherapy radiation for a malignant tumor. Which instruction regarding skin care of the portal site should the nurse provide?

A. Protecting the skin of the radiation portal site from sunlight exposure is crucial to prevent further damage to the irradiated area, as the skin becomes more sensitive during radiation therapy.B. Washing the skin inside the radiation portal site should be done gently with mild soap and water, as directed by the healthcare provider, to maintain cleanliness and prevent infection. However, excessive rubbing or scrubbing should be avoided to minimize irritation.C. The ink marks of the portal are used as reference points for accurate delivery of radiation and should not be removed until instructed by the healthcare provider or radiation therapist.D. Moisturizing the radiation portal site can help alleviate dryness and discomfort associated with radiation therapy, but it should be done sparingly and with products recommended by the healthcare provider to avoid potential interactions or interference with the treatment.