Construction Planning and Management
Pick up the correct statement from the following with regards to C.P.M. network analysis of projects

The latest occurrence time for the node at which the activity arrow terminates, is called latest finish time
Earliest occurrence time of the event from which the activity arrow' originates, is called earliest start time of the activity
All listed here
The latest occurrence time of the node of which the activity arrow terminates minus the duration of the activity, is called latest start time

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Construction Planning and Management
In time-cost optimization of a project, crashing is done.

Only on activities lying on the original critical path and having flatter cost slopes
On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
On all the activities
On all the activities lying on the critical path

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