wwwwwwww (b) Assume that five DMUs operate under constant returns to scale technology. Table 1 gives input and output values of the five DMUS. Table 1. Observed input-output values DMU Risk Expenses ($10) 1-yr return (%) A 2.675 26.75 10.7 B 2.700 31.50 9.0 C 2.175 72.50 14.5 D 5.175 51.75 11.5 E 4.375 50.00 12.5 (i) (ii) (iii) Formulate a DEA model to compute expense efficiency of DMU B. Formulate a DEA model to compute risk efficiency of DMU E. Using a graphical method, determine the risk efficiency of all DMUS. You have to show the graph and all calculations in your answer sheet. Do not use SOLVER.