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4. Incremental Benefit Cost You are the manager of a county transportation system. Growth is occurring in your county and you need to expand the road system to new neighborhoods. Your planning section has provided you with the following options for the next 30 years: Option 1: Build the main road now in asphalt and add roads as the new neighborhoods are developed. Option 2: Build the roads in sections in asphalt as the new neighborhoods are developed. Option 3: Build the main and other roads now with concrete that is designed to last longer and has fewer maintenance costs but has higher initial construction costs. The interest rate is 8%. The costs and benefits of the options are as follows: Cash Flow Diagrams will be helpful to solve this problem. a) Find the benefit-cost ratio for each alternative using Conventional B/C b) Compare alternatives using incremental B/C c) Complete the Table below for Conventional B/C for each option and identify with an X which option is recommended by the Incremental B/C 4. Incremental Benefit Cost You are the manager of a county transportation system. Growth is occurring in your county and you need to expand the road system to new neighborhoods. Your planning section has provided you with the following options for the next 30 years: Option 1: Build the main road now in asphalt and add roads as the new neighborhoods are developed. Option 2: Build the roads in sections in asphalt as the new neighborhoods are developed. Option 3: Build the main and other roads now with concrete that is designed to last longer and has fewer maintenance costs but has higher initial construction costs. The interest rate is 8%. The costs and benefits of the options are as follows: Cash Flow Diagrams will be helpful to solve this problem. a) Find the benefit-cost ratio for each alternative using Conventional B/C b) Compare alternatives using incremental B/C c) Complete the Table below for Conventional B/C for each option and identify with an X which option is recommended by the Incremental B/C