Answer:
Increase the amount of the initial investment by $12,000 (C)
Explanation:
Option A- False. It is not a sunk cost but a relevant cost because it has a disposal value and there is market for the sale.
Option B-False. The NPV of the project will be reduced by $12,000 because it is a relevant cost and the disposal value will reduce the NPV of the project .
Option C- True. Because truck could have been sold for $12,000 if not use in the project, the disposable value will have to be added to the initial cost of the investment.