Consider the following linear programming problem: Max Z = $10x + $10y Subject to: 8x + 4y 40 5x + 10y 40 x, y 0 Find the optimal profit (Z) and the values of x1 and x2 at the optimal solution. A. x = 2, y = 4, maximum revenue = $60 B. x = 4, y = 2, maximum revenue = $60 C. x = 2, y = 4, maximum revenue = $120 D. x = 4, y = 2, maximum revenue = $120 E. None of the above