A project requires $$15,000$ of net working capital throughout its $5-$year life. How is this requirement handled in project analysis? Select all that apply. Multiple select question. $$15,000$ is a cash inflow at time zero. $$15,000$ is a cash outflow in year $5.$ $$15,000$ is a cash outflow at time zero. $$15,000$ is a cash inflow in year $5.$