A 43yearold woman seeks genetic counseling because of a recent diagnosis of endometrial cancer. Her family history includes a maternal grandmother with breast cancer at age 56, father with colorectal cancer at age 47, and one paternal aunt with ovarian cancer at age 49. Counseling regarding testing for which of the following syndromes is MOST appropriate?

A. familial adenomatous polyposis
B. hereditary breast and ovarian cancer
C. hereditary nonpolyposis colorectal cancer
D. PTEN hamartoma tumor syndrome