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25 points Save Answer Zenith Company uses the PERIODIC inventory method and had the following information: Units Unit cost Total Cost 1/01 Beginning inventory 100 $4 $ 400 1/20 Purchase 400 $5 2,000 7/25 Purchase 200 $6 1,200 9/20 Purchase 300 $7 2.100 Total 1.000 $5.700 A physical count of inventory on December 31 indicated that there were 400 units in ending inventory. Therefore, 600 units had been sold. Based on this information, using the weighted average cost method, what would the average cost per unit be? O $7.50 O $5.50 O$6.75 O $5.70