Which of the following are recommended for the implementation of a P3O model?
1. Follow a recognized programme or project methodology
2. Define a budget and associated timescales to deliver
3. Appoint a P3O Sponsor
4. Use a programme approach to implement a single office P3O staffed by one individual

A.
1, 2, 3

B.
1, 2, 4

C.
1, 3, 4

D.
2, 3, 4