You are managing a project to put on an event. You are about to start the execution phase of the project and have an approved project plan. As the project progresses, you want to compare the actual progress to the original project plan. In order to track course corrections, you also want to compare the actual progress to the plan as it stood at the beginning of each phase. Which of the following enables you to make these comparisons?

A.
Before you start the execution of the project, save the current values by setting the first baseline, which is called Baseline. At the end of each project phase, set Baseline again to save the current values.

B.
Before you start the execution of the project, save the current values by setting both Baseline and Baseline 1. At the end of each project phase, reset Baseline and set another baseline for the phase, such as Baseline 2, Baseline 3, and so on.

C.
Before you start the execution of the project, save the current values by setting the first baseline, which is called Baseline. At the end of each phase, set an interim plan.

D.
Before you start the execution of the project, save the current values by setting the first baseline, which is called Baseline.

Explanation:
Project calculates variance by comparing the values in the first baseline, called Baseline, to scheduled values, so you want to set Baseline at the beginning of execution. However, to save this original baseline when you set new baselines, you must also set Baseline 1 at the beginning of execution. Then, at the end of each phase, you set Baseline 2, Baseline 3, and so on to save another set of values as of the end of each phase. You must reset Baseline as well so that variances compare the scheduled values to the most recent baseline.

Answer option A is incorrect. Resetting baseline at the end of each phase overwrites the values previously stored in that baseline, so you can compare your current schedule only to what you saved at the end of the last phase.
Answer option D is incorrect. This step does not save the values as of the end of each phase. Answer option C is incorrect. Variance fields do not compare current values to interim plan values.