What is the data type returned by the CREATE_TIMER built-in?（）

A.methods 
B.object tables 
C.object columns 
D.collection types 
E.object as stored procedure parameters

A.vector 
B.database view 
C.database table 
D.transactional trigger 
E.PL/SQL table of records 
F.multi-dimensional array

A.On the Oracle server. 
B.Locally in each form module. 
C.In an attached PL/SQL library 
D.On your file network server.