If the heat exchanger area in Q1 is 200 m2/heat exchanger, the cost law coefficients are a = 30,000 $, b = 400 $, c = 0.9 and hot and cold utility costs are 120,000 $/MW/year and 15,000 S/MW/year, respectively. Take i = 0.1 and useful life of heat exchangers = 5 years. Which design will you select (MER or a non-MER design)?