The chief executive officer (CEO) of Platnum Inc. has just returned from a management seminar describing the benefits of the lean philosophy. The CEO issued the following statement after returning from the conference: This company will become a lean manufacturing company. Presently, we have too much inventory. To become lean, we need to eliminate the excess inventory. Therefore, I want all employees to begin reducing inventories until we make products "just-in-time". Thank you for your cooperation. To implement lean, a company must first remove the reasons for excess inventory. All of the following are reasons except: a. poor quality b. large setup times c. unreliable equipment d. poor employee relationships e. worker's unions