By the Late Nineteenth Century, Girls Outnumbered Boys in Public

By the late nineteenth century, girls outnumbered boys in public high school graduation,

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