A Child Is Scheduled to Undergo Radiation Therapy as Part

A child is scheduled to undergo radiation therapy as part of his treatment plan for newly diagnosed cancer. After teaching the child and parents about this treatment, the nurse determines that additional teaching is needed when the parents state which of the following?

A) "We should not wash off the markings on his skin."
B) "He can use petroleum jelly if the skin becomes reddened."
C) "He needs to use a sunscreen with an SPF of 30 or more."
D) "He should not apply deodorant to the treatment site."