All power plants are now required to invest in one of four alternative pollution control technologies to reduce their emissions. As the manager of one plant, you are deciding which one is the most cost effective for you (i.e. cheapest). You are given the following information: Technology Installation cost Operating costs: energy maintenance labor insurance A 12000 B 15000 C 18000 D 20000 2560 3600 800 240 2560 3400 740 300 2000 2920 520 360 1900 2600 480 420 Each technology has a total life of three years. The installation cost occurs in the beginning of the first year. The operating costs are paid at the end of each year. Technologies C and D can be salvaged at the end of their life and earn 1000 and 1500 in scrap value, respectively. Assuming a discount rate of 5%, calculate the net present value of each technology. As the plant manager, which would you adopt? From a social planner's perspective, what is missing in this analysis?