YoudesignaSQLServer2008ReportingServices（SSRS）solution.YoucreateareportbyusingMicrosoftVisualStudio.NET2008.Thereportcontainsthefollowingcomponents：AdatasetnamedCustomerthatlistsallactivecustomersandtheirdetails.Thedatasetacceptsnoparameters.AdatasetnamedSalesHistorythatlistsallsalestransactionsforaspecifiedtimeperiodandacceptsyearandmonthasparameters.Youneedtoensurethatasummaryofsalestransactionsisdisplayedforeachcustomerafterthecustomerdetails.Whichcomponentshouldyouaddtothereport？（）
YoudesignaSQLServer2008ReportingServices（SSRS）solution.YoucreateareportbyusingMicrosoftVisualStudio.NET2008.Thereportcontainsthefollowingcomponents：AdatasetnamedCustomerthatlistsallactivecustomersandtheirdetails.Thedatasetacceptsnoparameters.AdatasetnamedSalesHistorythatlistsallsalestransactionsforaspecifiedtimeperiodandacceptsyearandmonthasparameters.Youneedtoensurethatasummaryofsalestransactionsisdisplayedforeachcustomerafterthecustomerdetails.Whichcomponentshouldyouaddtothereport？（）
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