Refining Estimates May Be Necessary for a Number of Reasons

Multiple Choice

Refining estimates may be necessary for a number of reasons. For example, resource shortages, in the form of people, equipment, or materials, can extend original estimates. This is a good example of

A) hidden interaction costs.
B) things going wrong on a project.
C) normal conditions not applying.
D) changes in project scope.
E) the customer not being clear about their expectations.