Use the figure on the right to answer this question. If the firm produces $q,$ units, total cost will equal

A$.1,200$;$$12,000$

B$.1,000$;$$10,000$

C$.1,200$;$$3,600$

D$.1,200$;$$8,400$

E$.1,000$;$$6,000$

Price $($dollars per unit$)$