Answer: Increase the Amount of the Initial Investment by $9,000
Step-by-step explanation:
It is important to note that when estimating the costs of a project that Opportunity Costs are included because they are costs afterall.
Opportunity Costs are the benefits you would have accrued had you taken the alternative to your current action.
If the project was not embarked on, the truck could have been sold for $9,000 making that $9,000 an Opportunity cost.
To give a fair reflection of the project costs therefore, Yeatman should increase the Initial investment by $9,000.