All of the following statements are true regarding the Activity Sequencing / Activity Duration Estimation process EXCEPT:
A. Activity duration estimates should specify a single, specific duration, and NOT a range of durations
B. Analogous estimation is a form of expert judgment that is used as a tool / technique in activity duration estimation
C. Precedence diagramming methods are tools/ techniques of activity sequencing process
D. Activity duration estimates are an output of activity duration estimates.