twentory by Three Methods The units of an itern available for sale during the year were as follows: Jan.1 inventory 26 units at $200 per unit Fob, 19 Purchase 57 units at $230 Der unit June 8 purchase 53 units at $40 per unit Oa. 7 Purchase 56 units at $275 per unit There are 47 units of the item in the olwsical inventiory at December 31 . The pernodic ieventory svitem is used. Determitue the inventory cost under each of the following methods