Answer:
Option (a) is correct.
Explanation:
Sunk cost refers to a cost that is already incurred and cannot be recovered. It cannot be changed from any future decision.
Given that,
Original cost of the equipment = $500,000
Accumulated depreciation = $460,000
Sunk cost in this situation:
= Original cost of the equipment - Accumulated depreciation
= $500,000 - $460,000
= $40,000