The Following Questions Refer to the Cost Regression for Straker

The following questions refer to the cost regression for Straker Industries shown below.
Straker Industries estimated its short-run costs using a U-shaped average variable cost function of the form

and obtained the following results. Total fixed cost (TFC) at Straker Industries is $1,000.DEPENDENT VARIABLE:
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-If Straker Industries produces 20 units of output, what is estimated total cost (TC) ?

A) $1,348
B) $1,498
C) $2,348
D) $4,428