The accounting manager wants you to create a form that when queried will display a calculated total of year-to-date actual expenditures for the found code entered. The values needed to generate this summary data are stored in multiple tables. Which data source type can you assign to the data block for this form without having the DBA create a database object?（）

• A、database table 
• B、transactional trigger 
• C、stored procedure 
• D、FROM clause query 
• E、client-side procedure