Answer: Option E
Explanation:
A. Poor quality inventory will not be sold leading to excess of it thus it is a reason.
B. Large set up times will lead to loosing of customers, thus, reason for excess inventory.
C. Unreliable equipment urges for overproduction while the equipment is working efficiently thus it is a reason for excess inventory.
D. Poor employee relationships effects organisation process which might lead to delay in sales thus, a reason for excess inventory.
E. Workers union establishes efficiency in the work performance of labor, thus, it is not a reason in excess inventory.