（单选题）
You plan to set up the Automatic Workload Repository （AWR） baseline metric thresholds for a moving window baseline. Which action would you take before performing this task？（）
A Compute the baseline statistics.
B Take an immediate AWR snapshot.
C Decrease the window size for the baseline.
D Decrease the expiration time for the baseline.
正确答案
答案解析
略
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