Which One of the Following Reflects the Use of a Grade-Equivalent

Which one of the following reflects the use of a grade-equivalent score?

A) Ms. Eskers's fifth graders are given a writing achievement test in which they are compared to norms for a variety of grade levels.
B) Mr. Rosenthal's fifth graders are given a mathematics achievement test in which they are compared to a norm group consisting only of fifth graders.
C) Mr. Huang's eighth graders are given a physical fitness test in which their scores are reported in terms of the percentage of people getting the same or lower score.
D) Ms. Richard's eighth-grade students are given a history achievement test for which each student's test performance is compared to students at exactly the same age level.