A nurse is caring for a child who is brought to the urgent care clinic following exposure to poison ivy 1 hr ago. Which of the following actions should the nurse take first?

A. Applying calamine lotion is helpful for symptom relief but does not remove the poison ivy oil from the skin. B. Flushing the affected area with cold, running water immediately after exposure helps to remove the poison ivy oil (urushiol) from the skin, which is crucial in preventing or reducing the severity of the rash. C. While an oatmeal bath can help soothe itching, it is not the priority action in the acute stage of exposure. D. Administering an oral corticosteroid may be necessary if the rash is severe, but flushing the area with water should be the first step in preventing further reaction.