During a monthly program review, a CAM is asked why the Cost Performance Index (CPI) for their control account dropped from 1.02 to 0.91. What is the MOST effective way to present this variance?
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A
Explain the root cause, quantify the cost impact, and present the corrective action plan with expected recovery timeline
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B
State that the variance is within normal fluctuation and will self-correct
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C
Refer the question to the program scheduler since cost and schedule are linked
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D
Present only the cumulative CPI, which remains above the reporting threshold