Suppose a manufacturer needs to place a one-time order of 5,000 units. Supplier A offers an incremental quantity discount that charges $12 per unit for the first 2,000 units in an order and $10 per unit for any additional units in the order. What is the average unit cost of the order if the manufacturer places the order with Supplier A? Find the closest value. $8.8 $10.8 $9.2 $11.0.