In Report Studio, an author wants to conditionally format a list report according to the revenue generated by each product line. The Revenue data item does not appear in the list report but is contained in Query1. Which of the following must the author do in order to apply this conditional formatting?
A. Make the Revenue data item a property of Query1.
B. Make the Revenue data item a property of the List object.
C. Make the Revenue data item a property of the Page object.
D. Make the Revenue data item a property of the Variable object.