3 points) (Based on a problem by Grant & Treson) A certain section of highway is currently in location A-1, A number of proposed alignments at the current and new locations have been developed and the proposed improvements are to be compared with tre continuation of the present condition at A-1. The following table presents the costs to the agency and to the users. All dollar amounts are in thousands ($000), Using an infinite life and an interest rate ot p.a.: 6% a) Draw the cash flow diagram for A-2. b) Complete the remaining table. c) Select the best alternative based on total cost analysis. Annual Annual First Cost, AW First O&M Cost Road User Total Annual Cos Alternative A-1 (current) A-2 Cost Cost 60 35 30 2,200 1,500 2,000 3,000 4,000 5,500 8,000 1,920 1,860 1,790 1,690 1,620 B-1 B-2 C-1 40 C-2 30 1,470