Which of the following types of cost is shown in the cost data below? Cost per Number of Units Unit $8,000 1 8,500 2. 9,000 3 47 9,500 4 Oa, fixed cost Ob. mixed cost Oc. variable cost Od. period cost A firm operated at 80% of capacity for the past year, during which fed costs were $193.000, variable costs were 68% of sales and sales were $923,000. Operating profit was OS Ob. 5527640 Oc 1102.340 Od 5295.340