The client tells the nurse that she has stopped spontaneous menstruation as part of the process of ...

The client tells the nurse that she has stopped spontaneous menstruation as part of the process of menopause. Regarding the need for contraception, what should be the nurse's highest priority instruction to the client?
 
  a. Contraception is no longer necessary now that periods have stopped.
  b. Contraception should be used only if breakthrough bleeding occurs.
  c. Contraception should be used for 6 months after cessation of spontaneous menstruation.
  d. Contraception should be used until 1 year after cessation of spontaneous menstruation.