RJ Corporation has provided the following information about one of its inventory items: Number of Units Cost per Unit 400 $3,200 Date Transaction 1/1 Beginning Inventory 6/6 Purchase 9/10 Purchase 11/15 Purchase 800 1,200 $3,600 $4,000 $4,200 800 During the year, RJ sold 2,100 units. The average selling price was $4,500 per unit. What was RJ's gross profit using the FIFO cost flow assumption? Multiple Choice $1,690,000 $4,890,000 $9,450,000. Multiple Choice O $1,690,000 O $4,890,000 $9,450,000. O O $930,000