The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit Catalina Island or Camp Mosaic for their end-of-year trip. Which of the following is a representative sample of the population? Select all that apply
A. 20 sixth-grade students, 20 seventh-grade students, and 20 eighth-grade students
B. 10 seventh-grade boys and 10 seventh-grade girls
C. 25 seventh-grade students
D. 15 seventh-grade boys and 5 teachers
E. 25 students from the school