Which of the Following Statements Pertaining to Breast Tissue Density

Which of the following statements pertaining to breast tissue density is TRUE?

A) Sensitivity for detecting cancer is higher in a fatty breast than in a breast with heterogeneously dense breast parenchyma.
B) The designation of a breast as fatty or fibroglandular is the basis of the BI-RADS classification.
C) The sensitivity of breast cancer diagnosis in mammography is highest with extremely dense breast parenchymal patterns.
D) Breast density is an important descriptive term in breast ultrasonography.