The record group in the EMP form is populated using a SELECT statement that is constructed programmatically at runtime. Five employee records are displayed at one time, and a user chooses item two from the record group. Which built-in would you use to determine which rows were flagged in the record group?()
A、GET_GROUP_ROW_COUNT
B、GET_GROUP_SELECTION_COUNT
C、GET_GROUP_SELECTION
D、FIND_GROUP
E、FIND_COLUMN
F、ADD_GROUP_ROW