When entering a client's room, the nurse observes the client holding up an arm and coughing non-productively into the upper sleeve. Which action should the nurse take?

D Teach the client to cover the mouth with hands when coughing. A Provide a box of tissues for the client to use when coughing. B Obtain face masks for staff to wear upon entering the room. C Assist the client in changing into a fresh hospital gown.