Refer to the Scenario Below to Answer the Following Question(s)

Refer to the scenario below to answer the following question(s) .
Alpha Stampings Inc. produces 14 metal stampings for the automotive industry. Due to industry design changes and consumer demands, for the next financial year, six of those stampings will require a slight change: two will have an extra hole punched through the side, two will require an extra plating process, and two will require an additional weld operation.
In the meantime, purchasing agent Richard Koehl has been asked to reduce the number of Alpha's steel suppliers in an effort to cut costs. After obtaining updated price quotations and steel samples from his current suppliers, Richard faced a dilemma. Until now, he had selected his suppliers based on quality and price, but the major consideration had been the type of steel required and the specialized production processes of his respective suppliers. Not all of Alpha's suppliers could produce the exact grades of steel needed; some suppliers were better at producing certain types of steel than others.
Richard contacted several employees at Alpha who had worked with the various types of steel in the past. The quality control manager and line inspector, for example, could help to determine which suppliers had the capabilities of producing specific types of steel. The production control manager could provide input regarding which types of steel worked best in which presses. The warehouse foreman gave inputs regarding how long various types of steel could be held in inventory before rust spots began to form on their surfaces. Each person contributed the necessary information to help Richard in making his decision.
-In this scenario, which of the following had the greatest influence on the business buying behavior at Alpha Stampings?

A) individual preferences
B) organizational structure
C) interpersonal influences
D) technological changes
E) cultures and customs