A. They are teenagers.

B. They are in their twenties

C. They belong to different age groups

A. It helps to improve relationship among different classmates.

B. It helps to develop problem solving skills.

C. It provides supportive learning environment.

A. There’s a number of essays to write.

B. There’s a lot of practical work.

C. There’s internship provided.

A. It is essential training.

B. It is too theoretical.

C. It takes up too much time.