environmentally conscious companies are looking for ways to be less damaging to the environment while saving money with innovative investments in capital equipment. dupont is sponsoring a project to recover much of the energy presently being lost in the primary stage of one of their chemical reactor vessels. three mutually exclusive designs are being considered for implementation. the estimated capital requirements and annual savings in operating expenses are given below. assume a marr of 15% per year and the study period is 6 years. you are to determine which design should be selected. eoy er1 er2 er3 0 -$100,000 -$105,000 -$71,200 1 - 6 $25,800 in year 1, growing by 6% per year $30,000 in year 1, growing by $250 per year $21,750 per year 6 $43,000 $52,000 $25,000 use a profitability measure of your choise to identify the preferred design. clearly state the reasoning of your selection.