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单项选择题 You work as an application developer at Certkiller .com. You would like to create a custom performance counter for an application that you created recently.  To do this， you decide to create a custom category named ApplicationPerformance and a performance counter named HitNumber.You need to ensure that this counter is shared across numerous applications. What should you do？（）

A、A

B、B

C、C

D、D

  • D

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