Which datatype is returned by the FIND_MENU_ITEM built-in function?（）

A.A query whose object names change during its execution. 
B.A query whose object names are not known until run time. 
C.A query whose bind variables values change during execution. 
D.A query whose bind variable values are not known until run time.

A.Define a Key-Exit trigger for all the blocks in the form.  
B.In the Object Navigator, highlight all the items and define a Key-Exit trigger. 
C.Define a Key-Exit trigger on the primary key item in the master block.
D.No additional key-trigger definition is necessary.