Solve the linear programming problem using the simplex method. Maximize P=7x1+2x2-x3 subject to x1+x2-x3=8 2x1+4x2+3x3=24 x1, x2, x3=0 Use the simplex method to solve the problem. Select the correct choice below? and, if? necessary, fill in the answer boxes to complete your choice. A) The maximum value of P is _ when x1=_, x2=_?, and equalsx3=_. B) there is no optimal