The Inventory Data for an Item for November Are Using a Perpetual System,what Is the Cost of the Merchandise

The inventory data for an item for November are: $\begin{array}{l}\begin{array}{lll}\text { Nov } & 1& \text { Inventory } \\&4 & \text { Sold } \\& 10 & \text { Purchased } \\& 17 & \text { Sold } \\& 30 & \text { Purchased } \\\end{array}\begin{array}{lll}\quad\quad\quad\quad\quad\quad\\\end{array}\begin{array}{lll}20& \text { units at \$19 } \\10& \text { units } \\30& \text { units at \$20 } \\20& \text { units } \\10& \text { units at \$21 } \\\end{array}\end{array}$ Using a perpetual system,what is the cost of the merchandise sold for November if the company uses FIFO?

A) $610
B) $600
C) $590
D) $580