Last summer, to earn money for their college tuition, george and tom operated a food kiosk at clearwater beach, florida for 3 months. they sold soft drinks, chips, crackers, and candy bars. a month before they were planning to open, larry found a location that rented for $500 a month and a small refrigerator unit which they rented for $60 per month. alan found distributors for the food products as well as for the paper products that they would need. alan also purchased a business license for $80 and bought 3-month's worth of liability insurance for $100. the cups, straws, napkins, and extra sales people needed to staff the stand are all examples of: marginal costs. break even points. variable costs. fixed costsaverage costs.