The following units of an inventory item were available for sale during the year: 7 units at $48 Beginning inventory First purchase 19 units at $49 Second purchase 23 units at $50 Third purchase 18 units at $52 The firm uses the periodic inventory system. During the year, 22 units of the item were sold. The value of ending inventory rounded to the nearest dollar using average cost is (Round average cost per unit to three decimal places.) Oa. $2,252 Ob. $1,136 Oc. $1,071 Od. $1,056