One of Mary’s responsibilities is developing the ending inventory amount for the calculation of cost of goods sold each month. At the end of September, Mary noticed that the ending inventory for a new brand of televisions was much larger than she had expected. In fact, there had been hardly any change since the end of the previous month when the shipments of televisions arrived. Mary knew that the firm’s advertising had featured the new brand’s products, so she had expected that a substantial portion of the televisions would have been sold.