When Enforcing Referential Integrity on Fields with Multiple Values,you Need

Multiple Choice

When enforcing referential integrity on fields with multiple values,you need to ensure that ________.

A) the primary key and foreign key fields have not had any data entered into them
B) the foreign key field has not had any data entered into it
C) the primary key field has not had any data entered into it
D) Referential integrity cannot be enforced on fields with multiple values