In Cognos How do you add a calculated column to a list in a report?

Question $13$ Select one:

A$.$

Drag one column onto another, and then define the calculated expression

B$.$

Select a column in the list, and then change the Data Format property to Calculation

C$.$

Set the Calculated Columns property for the list to Yes

D$.$

Drag a Query calculation from the Toolbox into the list object