Buildings that are constructed to be environmentally responsible are referred to as “green buildings.” They cut down on energy consumption, increase water efficiency, improve indoor air quality, and use recycled materials in their construction. According to recent studies, money spent on a green building will pay for itself ten times over the 50-year life of the building. Assuming end-of-year annual savings of P/5, where P is the investment cost of the building, draw a cash flow diagram for this situation.