ExerCyte has decided to build up inventory this year in expectation of future sales increases. ExerCyte plans to increase inventory in 2020 by $10,000, before decreasing inventory by $5,000 in 2021 and $5,000 in 2022 to return to normal levels. How will this change impact net working capital (NWC) and net cash flow (NCF) in 2020? Assuming a cost of capital of 15%, how will this inventory increase and subsequent decrease impact the net present value (NPV) of ExerCyte's project?