You are the Exchange administrator of the Xxx Corporation’s Exchange 2010 organization.You are concerned about the total size of items that are stored in a public folder namedExpenseReport.Click the Exhibit （s） button to view the public folder configuration. Which of the following techniques should you use to determine the size of items and the attachments in the public folder？（）
- ARun the following script： Get-PublicFolderItemStatistics -Identity "\ExpenseReport\2009"
- BClick on the Statistics tab in the properties of the public folder with the Public Folder Management Console
- CUse the MSExchangeIS Public object in System Monitor
- DUse the MSExchangeIS object in System Monitor