(Find the topic)Students should be allowed to study without worrying about grades ( 学习成绩 ). Fortunately, most educators realize that students have different interests and abilities. However, grade-based assessment is still very common. Grades often hold back creativity.Competing for better grades causes many students to turn down opportunities to go in for music, drama and sports. Grades are also an unfair measure of a student’s ability. I do not demand, as some extremists do, that grades should no longer be recorded. However, I do believe that less importance should be placed on grades. I hope that someday grades will become optional( 可选择的 ) at Village High School. Magdalena Smith, President Drama Club The topic of the passage is _________. A. Students should be allowed to study without worrying about grades. B. Students should study hard to get more grades. C. Students should pay more attention to grades. D. Grades are useless.