Compare the calculated financial ratios against the industry benchmarks for the industry of your assigned company.

Financial Statements for the company assigned( AT&T) by your instructor in Week 2.
Review the assigned company’s financial statements from the past three years.
Calculate the financial ratios for the assigned company’s financial statements, and then interpret those results against company historical data as well as industry benchmarks: 
Compare the financial ratios with each of the preceding three (3) years (e.g. 2014 with 2013; 2013 with 2012; and 2012 with 2011).
Compare the calculated financial ratios against the industry benchmarks for the industry of your assigned company.
I actually did this class before and did the ratios for another company – Target and the professor said it was all wrong. So now I am unsure of what I’m supposed proceed.