Use the Following Information to Answer Questions $S M C = 12 - 0.005 Q + 0.0000008 Q ^ { 2 }$

Use the following information to answer Questions.
Sport Tee Corporation manufactures T-shirts bearing the logos of professional baseball and football teams. The wholesale market for sport T-shirts is perfectly competitive.The manager forecasts the wholesale price of T-shirts next year to be $7.00. The firm's estimated marginal cost is $S M C = 12 - 0.005 Q + 0.0000008 Q ^ { 2 }$ where Q is the number of T-shirts produced and sold each month. Sport Tee Corporation will have a fixed cost of $2,000 per month.
-Average variable cost at Sport Tee is

A) 12 - 0.01Q + 0.0000024Q²
B) 12 - 0.0025Q + 0.000000266Q²
C) 12 - 0.0001Q + 0.000001Q²
D) 12Q -0.0025Q² + 0.000000266Q³
E) none of the above