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【单选题】
Refer to Exhibit 11-11. If the output equals four watches per week, then the average total cost of producing a watch equals: Output Total Cost (Per Week) (Dollars) 0 $ 50 1 $ 60 2 $ 65 3 $ 69 4 $ 72 5 $ 95 6 $120A.
$72.
B.
$3.
C.
$18.
D.
$5.50.
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