Progress has never been saveo 4) Which of the following statements about network models for project management is false? O Milestones have zero duration O Nodes can only represent activities There can be only one starting point Logic drives the project schedule 5) When estimating task durations for a project plan, you should indicate how much time you will spend on the task use a "best case," or optimistic, estimate of the duration plan to use elapsed time from a task's start to completion a and All of the above 001 01. 10 @ 4 0