Answer:
A. When holding costs increase, Economic Order Quantity decreases
Explanation:
The answer will be attain through the following illustration
Suppose, Demand = 1000 units, Ordering cost = $10, Holding cost = $0.50
Economic Order Quantity = √2 * 1000 Units * $10 / $0.50
Economic Order Quantity = √40000
Economic Order Quantity= 200 units
Assume, there is increase of holding cost to $1.50
Economic Order Quantity = √2 * 1000 Units * $10 / $1.50
Economic Order Quantity = √13333
Economic Order Quantity = 116 unit
Therefore, when holding costs increase, Economic Order Quantity decreases.