You are managing a project schedule in Microsoft Office Project Standard 2007. You enter tasks and dependencies in the project schedule. The project is large and has multiple people working on deliverables at the same time. You need to estimate the total project duration. What should you do?

A.
Set the task calendars to 24 Hours.

B.
Display the project summary task in the Gantt Chart view.

C.
Sum the durations of the project subtasks, including the summary task durations.

D.
Sum the durations of the project subtasks, excluding the summary task durations.