A linear program output was that the profit is maximized at $60 when we make 5 chess sets and 10 hockey sticks. Which of the following is true:
it is possible to exceed a profit of $60 without violating the constraints
it is not possible to exceed a profit of $60 without violating the constraints, and it is achieved only by making 5 chess sets and 10 hockey sticks
it is not possible to exceed a profit of $60 without violating the constraints, but there may be a different combination of chess sets and hockey sticks that can provide the same profit.