Solve the linear programming problem What is the maximum value of z? Select the correct choice below and, if necessary, fill in the answer box to Maximize z= 5x + 5y complete your choice. subject to 7x + 6y = 133 16x - 9y > 145 X+y s 45 O A. Z= X20 (Type an integer or a fraction.) y20 O B. There is no maximum value of z. At what corner point(s) does the maximum value of z occur? Select the correct choice below and, if necessary, fill in the answer box to complete your choice A. The maximum value of z occurs only at the point(s) (Type an ordered pair, Use a comma to separate answers as needed.) O B. The maximum value of z occurs at the points and at all points connecting them