California-Based Innovative Installers, Inc

California-based Innovative Installers, Inc. provides a variety of corporate services related to office space. The firm sells modular office furniture, offers space planning consultations, and provides office relocation services. The company was founded in 1992 and depended on the growth of dot.com companies for its early success. Innovative Installers has experienced cash flow problems during the recent economic recession, and top managers are eager for salespeople to obtain new accounts. Mierzett Evans and Glenda Heldris are two of Innovative Installers' salespeople. Glenda is meeting with an Office Pro store manager. Office Pro is interested in purchasing a line of Innovative Installers' desks to sell in the Office Pro retail stores. Glenda tells the Office Pro manager that she has a limited supply of the desks; however, she can obtain more desks if Office Pro also purchases desk chairs. Glenda is most likely guilty of:

A) establishing unfair sales restrictions.
B) practicing price discrimination.
C) setting an exclusive dealership.
D) encouraging a tie-in sale.
E) requiring reciprocity.