Demand by Grid Location (demand is given in the gray cells below) 1 2 3 4 5 6 7 8 9 10 11 12 1 5 4 2 6 6 1 0 4 5 3 2 3 2 5 6 3 1 5 4 3 0 1 0 3 6 3 5 6 1 2 4 6 1 6 4 3 5 5 4 1 0 0 0 5 0 1 6 3 2 1 4 5 5 3 2 5 4 3 2 4 2 1 4 5 6 5 1 2 2 2 4 3 4 4 4 0 3 7 1 1 3 6 5 1 5 6 5 2 6 3 8 6 2 5 2 4 0 3 0 0 6 1 2 9 0 1 6 4 2 4 4 0 3 5 2 5 10 1 2 2 4 0 6 1 4 2 0 2 6 11 6 5 0 5 3 3 3 1 0 5 2 5 12 6 2 2 0 1 2 0 1 1 3 1 1 1) (18 points) Identify using binary variables (0,1) where the six towers should be placed. 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 2) (7 points) What is the total demand fulfilled by the six new towers? 5 6 7 8 9 10 11 12