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. An oatmeal bath can soothe the skin but is not the immediate first step. B. Flushing the area with cold, running water helps remove the plant oils that cause the reaction and is the first step in managing poison ivy exposure. C. Administering an oral corticosteroid may be necessary for severe reactions but is not the first action to take. D. Calamine lotion can help with itching but should be applied after washing off the plant oils.