-Figure 7-7 Shows a Firm's Total Variable Cost for Different

-Figure 7-7 shows a firm's total variable cost for different daily output levels.In addition,the firm has total fixed cost of $50 per day.If output increases from 20 to 30 units,average total cost rises from

A) $17.50 to $19.17,and marginal cost is $225.00
B) $400 to $625,and marginal cost is $225.00
C) $15.00 to $22.50,and marginal cost is $22.50
D) $20.00 to $20.83,and marginal cost is $22.50
E) $20.00 to $20.83,and marginal cost is $225.00