Lean principles 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". 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