Although individual work package tasks are not shown on the WBS$,$ this information would be contained in an accompanying document called a precedence network, in which tasks and their relationships to one another, or precedence relationships, are indicated. Which of the following is NOT a guideline for defining tasks?O A$.$ Task names should be phrased as verbs.O B$.$ Every task should have an associated deliverable.O C$.$ Tasks should be non$-$preemptive; that is$,$ they cannot be stopped once started.O D$.$ Tasks should be overlapping and$/$or grouped with other tasks.