What is required to accomplish this?

Universal Containers wants to associate a region code value with an order to indicate the general area of its destination. This region code must be accessible whenever the order history is displayed.

What is required to accomplish this?
A . Store the region code value in a session variable.
B . Define a custom attribute on the Order system object type to store the region code value.
C . Define a custom object type to store the username with the region code.
D . Store the region code value in the geolocation system attribute of the Order.

Answer: B