Marty's Frozen Yogurt is a small shop that sells cups of frozen yogurt in a university town.Marty owns three frozen-yogurt machines. Hisother inputs are refrigerators, frozen-yogurt mix, cups,sprinkle toppings, and, of course, workers. He estimates that his daily production function when hevaries the number of workers employed (and at the same time, of course, yogurt mix, cups, and so on).What are his fixed and variable costs?