Final answer:
The Estimate at Completion (EAC) is the sum of Actual Cost of Work Performed (ACWP) and Estimate to Complete (ETC), which makes option A correct. Other options present variations of the EAC formula components, but option A is the standard expression of the EAC.
Step-by-step explanation:
The question is about estimating the total cost to complete a project, a concept typically found in project management and cost control. The Estimate at Completion (EAC) is a forecasting tool that predicts the total cost of a project based on current performance. Regarding the provided options:
- Option A suggests that EAC is the sum of the Actual Cost of Work Performed (ACWP) and Estimate to Complete (ETC).
- Option B proposes EAC as the sum of ACWP and the difference between the Budget at Completion (BAC) and the Budgeted Cost for Work Performed (BCWP).
- Option C indicates that EAC is the difference between BAC and the difference between BCWP and ACWP.
- Option D states that all of the above are equal to EAC. However, this is not accurate as there is only one correct formula for estimating completion.
The correct formula for EAC, depending on the context and available data, can be EAC = ACWP + ETC, which is synonymous with Option A. Thus, even though the other options provide similar components of the common EAC formulas, they are not the standard way to express EAC as listed in the question. Therefore, the answer is A) the sum of Actual Cost of Work Performed & Estimate to Complete.