When you select an option during the presentation of an <<*AskOptions* selection, Pathagoras converts the name of that selection to a new !GroupName! element with a 'true' value that can be used as any optional !groupname!. Similarly, if you do not select an option, the same occurs, except the element is assigned a 'false' value.
You do need to be a bit careful in naming. If you use an Options !groupname! that is identical to on of the 'hard' values, the results may not be as you expect.
By way of example:
<<*AskOptions*!Grantors!Single Grantor/Multiple Grantors>>