During High School and University

During high school and university,

A) girls usually get higher grades in math courses and higher scores on math achievement tests than boys.
B) boys usually get higher grades in math courses and higher scores on math achievement tests than girls.
C) girls usually get higher grades than boys in math classes but lower scores than boys on math achievement tests.
D) boys usually get higher grades than girls in math classes but lower scores than girls on math achievement tests.