You are building two forms. Each form has a button and a non-base table field. When the button is pressed, a complicated calculation is executed. The calculation is the same for both forms. The calculation code does not query or change the data in the database. When the calculation completes, it returns a single value to the non-base table field. To optimize performance and maintainability, which PL/SQL structure should be used? （）

A.Write client-side subprograms containing the PL/SQL8 constructs, and move them into an object group. 
B.Write server-side subprograms, and call the subprograms from the form application. 
C.Store the PL/SQL8 constructs in a PL/SQL library, and attack the library to each form muddle in your application.

A.Magic 
B.Plain 
C.Check 
D.List item 
E.Divider

A.Select the block that contains the data to appear in the pie chart. 
B.Select the table that contains the data to appear in the pie chart. 
C.Select the view that contains the data to appear in the pie chart. 
D.Nothing. The wizard will automatically create the pie chart based on the highlighted data.