The graph shows a region of feasible solutions. Use this region to find maximum and minimum values of the objective function. z=7x+2y Select the correct choice below and, if necessary, fill in the answer box to complete your choice. The coordinates of the corner points are A. The maximum value is B. The maximum value does not exist. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The minimum value is B. The minimum value does not exist