A Client Has Newly Diagnosed Systemic Lupus Erythematosus (SLE)

A client has newly diagnosed systemic lupus erythematosus (SLE) .What instruction by the nurse is most important?

A) "Be sure you get enough sleep at night."
B) "Eat plenty of high-protein, high-iron foods."
C) "Notify your provider at once if you get a fever."
D) "Weigh yourself every day on the same scale."