Luca Is the Database Administrator for a City Parks and Recreation

Multiple Choice

Luca is the database administrator for a city parks and recreation department.  The department routinely uses community college interns to process applications and registration for the department's programs.It is important that the user interface minimize user input errors as much as possible.
-Luca needs to use a VBA function in his code to return a value of True if the Paid field has no data or a value of False if the Paid field is not empty.Which VBA function should Luca use?

A) IsPaid
B) IsNum
C) IsNull
D) IsBound