What Is the Purpose of the Least Restrictive Environment Provision

What is the purpose of the least restrictive environment provision of IDEA?

A) To ensure that students with similar disabilities are educated together.
B) To ensure that children with disabilities are educated with nondisabled children whenever possible.
C) To ensure that every disabled student is educated at least part-time in regular classrooms.
D) To ensure that disabled students receive instruction from a variety of teachers.