Which of the Following Describes a Detracking Method

Which of the following describes a detracking method?

A) placing low-achieving students in the same college prep program as high-achieving students
B) removing college prep programs and placing all students in general education content classes
C) placing English learners and native English speakers in ELD classrooms with separate content classes.
D) removing ELD services from the school and placing all English learners in mainstream classes