【单选题】
You design a Business Intelligence （BI） solution by using SQL Server 2008. You plan to design the report strategy for a new report project that will be used by a financial application. The application uses five calculations that are implemented in Microsoft .NET Framework 3.5 assemblies. The assemblies are written in the C# language and use the static methods. You need to ensure that the calculations can be used by the expressions in all reports. You also need to ensure consistency within the repo
A、 Add a reference to the assemblies in the Report Properties References tab.
B、 Write the calculation logic used by the calculations by using T-SQL functions.
C、 Write the code of the calculation logic into the Report Properties Custom Code tab.
D、 Write the calculation logic in each report by using the mathematical functions available natively to SQL Server 2008 Reporting Services （SSRS）.
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