Use the graph to answer the question that follows. A graph of supply and demand with price on the vertical axis and quantity on the horizontal axis. A downward sloping line is labeled D. There are two upward sloping lines S and St, with St above and parallel to S. St intersects demand at a price of 5 dollars and a quantity of 360. S intersects demand at a price of 3.50 dollars and a quantity of 540. St intersects the y axis at a price of 4 dollars, and S intersects the y axis at a price of 2 dollars. A price of 3 dollars corresponds to a quantity of 360 on the line S. What is the producers' total revenue after the tax in this market? $180 $720 $1080 $1620 $1890