Elijah has set up a budget for each month. He allows himself 300 for food,200 for bills, 100 for transportation, and200 for entertainment. By the third week of the month, Elijah has spent nearly his entire 300 food budget, but has100 remaining in his entertainment budget. Elijah spends his last few food dollars on rice and beans, the only thing he can afford with his remaining food money, even though he hates rice and beans. Elijah's behavior is an example as ________.