By the Late 19th Century, Girls Outnumbered Boys in Public

By the late 19th century, girls outnumbered boys in public high school graduation, _____.

A) but a bare majority of all high school-aged girls actually completed high school in the United States
B) but fewer than ten percent of the entire high school-aged population graduated in the United States
C) but for the first time a majority of all high school-aged students graduated high school in the United States
D) All of these answers are correct