P is an experienced engineer and project manager that has just been appointed to manage a complex multi-million pound engineering project. It is the start-up stage of the project and nothing at all has been done so far except for the design work. No other team members have been appointed.

P decides to start by firstly decomposing the full scope of the project into a hierarchy of work packages.

Secondly P intends to create a structure showing the reporting relationships and communications channels for the entire project team.

Thirdly, P  plans to embark on a systematic process of identifying all the individual elements that comprise the total cost of the project in order to calculate a bottom-up budget.

Select the structures that P will adopt in the correct order.