YouhaveanExchangeServer2010Mailboxserverthatcontainsmultiplemailboxdatabases.Youneedtoensurethatyoureceiveane-mailalertifthevolumethatcontainsthemailboxdatabasefileshaslessthan25percentoffreespace.Whatshouldyoudo？（）
A.CreateanewDataCollectorSet.
B.CreateanewEventViewerSubscription.
C.AttachanewtasktotheApplicationeventlog.
D.Modifythepropertiesofthemailboxdatabaseobjects.
参考答案：A
