ZYX COMPANY Observe the ER Diagram for the ZYX COMPANY

Multiple Choice

ZYX COMPANY
Observe the ER diagram for the ZYX COMPANY:

This ER diagram will be used for the following questions citing ZYX Company ER Diagram.
-Which of the following is true according to the ZYX Company ER diagram?

A) A customer cannot refer another customer
B) A customer can refer either only one customer or no customers at all
C) A customer can refer many customers
D) A customer must refer many customers