The beginning inventory for North Company consists of 150 units valued at $25 each. Four purchases of 50 units each were made during the year at $25.50, $26, $27, and $29 per unit, respectively. A physical count reveals 90 units on hand on December 31, which is the end of the accounting period. Assuming that the company values inventory by a periodic FIFO system, what is the cost of goods sold for the current period? $6,770 $6,810 $6,595