According to the textbook, U.S. companies and foreign companies are affected by deprecation rules. When companies write off the cost of long-lived assets over a period of time, the term used is depreciation.In order to complete this assignment, review Delta Airlines’ annual reports for the years 2012 and 2013, located at http://ir.delta.com/stock-and-financial/sec-filing….Write a 460-500 words paper in which you:Briefly outline Delta Airlines company’s history, products, and services, and identify the costs reported in the balance sheet for property, plant, and equipment. Prepare a horizontal analysis of Delta’s property, plant, and equipment for 2012 and 2013. Next, calculate the asset turnover ratio, return on asset ratio, and the debt to total assets ratio. Based on your calculations, indicate the conclusions that you can draw, based on the changes in property, plant, and equipment.