YXZ Company's market for the Model 55 has changed significantly, and YXZ has had to drop the price per unit from $275 to $135. There are some units in the work in process inventory that have costs of $160 per unit associated with them. YXZ could sell these units in their current state for $100 each. It will cost YXZ $10 per unit to complete these units so that they can be sold for $135 each.Which of the amount of sunk costs in this problem?