What does inventory holding refer to? ANSWER Unselected A strategy that involves keeping the workforce constant Unselected When employees do not have enough work for the regular-time workday or workweek Unselected Costs that vary with the level of inventory investment: the costs of capital tied up in inventory, variable storage and warehousing costs, pilferage and obsolescence costs, insurance costs, and taxes Unselected A strategy that involves hiring and laying off employees to match the demand forecast over the planning horizon