Considering the following LP problem: Max Z = 5x + 12x s.t. X + x >= 25 3x + x >= 45 5x + 7x2 >= 20 7x + 13x = 0 Which one of the following options is correct?

Considering the following LP problem: MaxZ=s.t.5x1+12x2x1+x2>=253x1+x2>=455x1+7x2>=207x1+13x2=0 Which one of the following options is correct? Which one of the following options is correct? The problem is infeasible The problem is unbounded There is more than one optimal solution (12,7) is the optimal solution None of the above