ProNet Systems is a start-up company that makes connectors for high-speed Internet connections. The company has budgeted variable costs of $135 for each connector and fixed costs of $9,000 per month. ProNet's static budget predicted production and sales of 100 connectors in August, but the company actually produced and sold only 80 connectors at a total cost of $24,000. ProNet's total flexible budget cost for 80 connectors per month is O A. $24,000. B. $13,500. C. $19,800. D. $10,800