Newcastle coal co. owns a warehouse that it is not currently using. it could sell the warehouse for $300,000 or use the warehouse in a new project. should newcastle coal co. include the value of the warehouse as part of the initial investment in the new project? a. yes, because the firm could sell the warehouse if it didn’t use it for the new project. b. no, because the company will still be able to sell the warehouse once the project is complete. c. no, because the cost of the warehouse is a sunk cost. a paper manufacturer has burl a plant that meets all government-mandated environmental regulations, but the plant still produces an unpleasant odor when it is being operated many residents in the area the paper because of these unpleasant odors. this is an example of externality.