Morton Company uses the periodic inventory method. The company's 20XX inventory information is as follows: 1/1 Beginning Inventory 100 $4 $ 400 2/20 Purchase 400 $5 $ 2,000 7/25 Purchase 200 $7 $ 1,400 10/20 Purchase 500 $8 $ 4,000 A physical count of inventory on December 3 1st revealed there were 400 units on hand. a. How many units were available for Morton Co. to sell during the year? A/ b. What is the total cost of the units available for sale? A c. How many units die Morton actually sell