Please help to explain this question






















You just created the following network logic diagram to describe the planned flow of activities for your project which will start tomorrow:



Which potential inconsistency in the diagram should you solve right now?
 

  Activity E is open ended ( a "dangle") in relation to the finish milestone path convergence.
  Activity F is open ended in relation to the path divergence after the start milestone.
  You cannot calculate a critical path when lags and/or leads are calculated in percent.
  Activities E to F need another task drawn as a hammock to calculate Level Of Effort.

Per my understanding, option 3 appears to be correct answer.

Reason is that if the lag / lead are in percentages then it will be difficult to calculate the critical and near-critical paths.

I believe this inconsistency in the diagram should be solved first.

 

 

The answer according to http://www.oliverlehmann.com is:

Activity E is open ended ( a "dangle") in relation to the finish milestone path convergence.