Sherman Electric uses a perpetual inventory system. The beginning inventory of a particular product, and the purchases during the current year, were as follows: Sherman sold 110 units for $200 on October 31^st. At December 31, the ending inventory of this product consisted of 100 units. Using periodic costing procedures, determine (1) cost of the year-end inventory and, (2) cost of goods sold relating to this product under each of the following flow assumptions: a. First-in, first-out b. Last-in, first-out