Alfonso Has Been Working with XQuery, and Would Like to Create

Multiple Choice

Alfonso has been working with XQuery, and would like to create a library module to centralize the global variables and functions he's created. He has encountered some problems in implementing the library module, and comes to you for help.
-Alfonso has fixed the error in the query prolog, but now is encountering problems when he tries to reference a function he defined and added to the library module. In looking at his library module code, you remind him that he must include the _____ keyword when creating a user-defined function.

A) namespace
B) define
C) declare
D) library