Refer to the exhibit to answer the question.

Which of the following are TRUE about the sequence diagram in the Exhibit?

A.
CourseSchedule is responsible for determining if a Student is qualified for a Course.

B.
CourseSchedule collaborates with Course to obtain the time for the available CourseSection.

C.
Course is responsible for determining if a Student is qualified for a Course.

D.
The application user may specify that multiple Courses be added to his CourseSchedule at
once.