engineering econ

Question 6 (10 points) A consulting engineer is currently evaluating 4 projects for the US government. The annual worth values of the costs, benefits, disbenefits, and savings are shown. Assuming the discount rate is 10% per year compounded continuously, determine which projects, if any, should be selected if they are independent? AW of costs, $ AW of benefits, $ AW of disbenefits, $ A B 10,000 8,000 15,000 12,000 6,000 3,000 C D 20,000 15,000 30,000 20,000 8,000 8,000 OB&D OBEC A, B, and D