One Factor in Tests of Mathematics Performance Is the Number

One factor in tests of mathematics performance is the number of math courses completed. Men

A) have always outnumbered women in mathematics classes during high school and continue to do so.
B) outnumbered women in mathematics classes during high school until the 1990s, but now enrollment is similar.
C) are less numerous in math classes during both high school and college.
D) not only outnumber women in math class but also make better grades.