Background: For this assignment, you will be assessing life cycle costs for a rainwater harvesting system. The rainwater is collected from rooftops, stored, and then used for toilet flushing. The costs for the svstem are as follows: Assume a discount rate of 10%. The lifetime of the system is 25 years. 4. Which of the following options would have the greatest impact on reducing life cycle cost? Calculate the updated life cycle cost for each option. State which of the 3 options will have the greatest impact. Show all of your work to receive credit. ( 35 points) Option A: Find new storage tanks that are instead $600. Option B: Reducing maintenance costs by $50/ year. Option C: Operating the system for a lifetime of 20 years instead of 25