I am confused on how to calculate the units sold. Please help me out, thank you!

etra Company uses the perpetual inventory system and a FIFO cost flow method. On January 1, the company purchased 2,300 units of inventory that cost $3.50 each. On January 12 , the ompany purchased an additional 3,300 units of inventory at a cost of $2.85 each. On January 20 , Tetra Company sold 4,300 units of inventory. Which of the following entries would be equired to recognize the cost of goods sold on that date? Multiple Choice