Quantity of Output Total Fixed Cost Total Variable Cost 1 $400 $30 2 $400 $44 Co $400 $60 4 $400 $80 UnT $400 $110 $400 $150 V $400 $200 8 $400 $280 In Figure 7-2, the average fixed cost of the first unit of output is _ while the average fixed cost of producing eight units of output is O a) $400; $680 O b) $40; $40 O c) $400; $50 O d) $40; $5