Identify the phases of menstruation according to the ultrasonographic appearance of the endometrium on the figure.

A. Late menstrual phase (single line)
B. Early proliferative (follicular) phase (three line): the endometrium is thickened but hypoechoic
C. Late proliferative (periovulatory) phase (thickened three line): the endometrium is thickened and becoming echogenic at the base
D. Late secretory (luteal) phase: the endometrium is diffusely hyperechoic and thickened