On the cost-volume-profit graph, the area between the total cost line and the sales line after the break-even point represents: O a. The contribution margin per unit
ob. The profit area
OC. The variable cost amount
Od. The fixed cost amount
Oe
The loss area

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?