Staff at a women's health center are being briefed by their supervisor on the latest ...

Staff at a women's health center are being briefed by their supervisor on the latest recommendations for breast cancer screening. Which of the following guidelines should staff pass on to their clients?
 
  A)
  Breast self-exam should be ideally performed around the time of the month that you think you're ovulating.
  B)
  The most important thing you can do to identify breast cancer early is to perform regular, systematic self-exams.
  C)
  All postmenarche females should get a clinical exam by a trained professional on an annual basis.
  D)
  Screening mammography and clinical exams are the cornerstones of breast cancer screening.