How can you introduce precedence relationship between tasks? O A. Click on the preceding task and dragon to the succeeding task in the Gantt Chart area (right hand side of the main screen) O 8. Double click on a task name and go to the "Predecessors" tab on Task information window OCClick on the drop down list on the main screen and check the boxes for the preceding tasks O D. Both A and B are possible options E. Both A and Care possible options OF. Both B and C are possible options G.A, B and Care possible options What is the difference between a Fixed Duration task and a Fixed Units task? O A. A Fixed Duration task can be crashed by increasing the resources on it OB. A Fixed Units task cannot be crashed by increasing the resources on it OC. A Fixed Duration task cannot be crashed by increasing the resources on it O D. A Fixed Units task's duration can be decreased by decreasing the resources on it