A Client Is Approved to Use a Heating Pad at Home.Which

A client is approved to use a heating pad at home.Which should the nurse emphasize when teaching the client about the use of this device?

A) Use the highest heat setting.
B) Expect the skin around the device to be red.
C) Set a timer for no longer than 20 to 30 minutes.
D) Apply petroleum jelly to the skin before applying heat.