Refining Estimates May Be Necessary for a Number of Reasons

Multiple Choice

Refining Estimates may be necessary for a number of reasons. For example, a manager getting further into a project and obtaining a better understanding of what needs to be done to accomplish a project and meet the needs of the customer is an example of

A) hidden interaction costs.
B) things going wrong on a project.
C) normal conditions not applying.
D) changes in project scope.
E) there is never a good reason to refine estimates.