Using the three most recent income statements (e.g., FY2019, FY2020, and FY2021) from AT&T company, please do the following:

For each of the three most recent years, divide COGS (Cost of Goods Sold) by Total Sales Revenue. Analyze the relationship between COGS and Total Sales Revenue. Does it appear that this company is trying to implement a lean operations approach? Does it appear that the company is succeeding in its efforts? Please explain. Using the three calculations of the [COGS / Total Sales Revenue] ratio, please apply the moving average technique to forecast the ratios for the next two years. What do you predict will happen to the [COGS / Total Sales Revenue] ratio in the next two years? Please explain.