Problem
List all elements you find in the case that influence the cash flows necessary for this NPV calculation. Indicate, as best as you can, whether these are regular costs or opportunity costs, or sunk costs. With proper argumentation, you can use these categories in a broad way to accommodate that some cash flows are positive, others negative. Thirdly, for each item in this overview, indicate if it would influence the taxes Magic Timber and Steel has to pay.