Mr. Chen goes to the post office to buy small and large boxes. He needs at least 4 small boxes. Altogether, he will buy no more than 15 boxes. The post office has 10 small boxes and 9 large boxes in stock.

The graph shows the feasible region, where x represents the number of small boxes and y represents the number of large boxes.

Which ordered pairs meet all the constraints and make sense in context of the situation?

Select each correct answer.