The following lots of a particular commodity were available for sale during the year Beginning inventory 9 units at $51 First purchase 15 units at $54 Second purchase 25 units at $21 Third purchase 19 units at $61 The firm uses the periodic system, and there are 24 units of the commodity on hand at the end of the year. What is the ending inventory balance at the end of the year rounded to nearest dollar according to the average cost method? Do not round intermediate calculations, Oa. $1.042 Ob. 51,224 Oc. $1.264 Od. 51.269