A nurse is reinforcing teaching with a client who is using a diaphragm to prevent pregnancy. Which of the following statements should the nurse include in the teaching?

"You should replace your diaphragm every 2 year”

"You should be refitted for your diaphragm if you have a 10 percent weight fluctuation."

"You should insert the diaphragm when your bladder is full."

"You should remove your diaphragm 4 hours after intercourse."