The school auditorium has seats. The inequality , with representing adults and representing children, can be solved to find the possible combinations of adults and children attending an event. Which reason describes why the ordered pair must be included in the solution set of the inequality? The context of the problem allows only integer solutions. The ordered pair is in the shaded region of the graph of the inequality. The ordered pair is on the boundary line of the graph of the inequality. The -value is equal to the -value.