A computer company salesperson invites the IT managers of its top 10 customers (in terms of dollar sales) to view a demonstration of the firm's new product line, so the salesperson can obtain their opinions regarding various options and configurations that could be offered. These IT managers are most likely to be the ________ of their organizations' buying centers.
(A) users
(B) reciprocity arrangers
(C) gatekeepers
(D) buyers
(E) influencers
