Which of the following offices can a P3O model consist of?

Which of the following offices can a P3O model consist of?
1. Permanent only
2. Temporary only
3. Both permanent and temporary
4. Neither permanent nor temporary

A.
1, 2, 3

B.
1, 2, 4

C.
1, 3, 4

D.
2, 3, 4