In Cognos Which of the following statements about calculations in reports are TRUE?

Question $25$ Select one or more:

A$.$

Calculations can be built by selecting a report item and then clicking Insert Calculation from the toolbar

B$.$

To remove lowercase letters from the front and back of a string value, use the upper$()$ function

C$.$

Data items cannot be directly referenced in a calculation

D$.$

Calculations can be added to a package by a data modeler

E$.$

A calculation cannot include parameters