How many price rules should the Admin create in order to process the four different discounts offered to Partners?

Universal Containers conducts business via channel sales and offers a Partner program, in which Partners receive a different level of discount based on their partnership level and the product family. The CPQ Architect has determined that the Partner discount will be automatically assigned with price rules, based on a lookup table. The CPQ Architect has created the following lookup table with an object named “Partner Program”.

How many price rules should the Admin create in order to process the four different discounts offered to Partners?
A . Four
B . Two
C . Three
D . One

Answer: D