All of the following can be said about network diagrams EXCEPT:

1.For making a network diagram, a horizontal bar is drawn for each activity to show its sequence and duration. In a critical path, the order and duration of the sequence of activities directly affect the completion date of a project.

2.A sequence of connected activities that produce the longest overall time period is referred to as critical path.

3.The latest expected completion time refers to the time in which an activity can be completed without delayingtheproject.