The Slamma Jamma Sorority held a party. The sorority prepared the following budgetfor 50 expected attendees: Roomrental $150 Food 310 Entertainment 150 Decorations 75 Totals $685 Afterall bills for the party were paid, the total came to $760. Details are: $240 for room rental; $320 forfood; $145 for entertainment; and $75 for decorations. Fifty persons attended the party. Whichof the following costs deserves further examination assuming the sorority usesthe management-by-exception rule?