Presented here is selected information from the 2010 fiscal-year 10-K reports of four companies. The four companies, in alphabetical order, are: Advanced Micro Devices, a company that manufactures semiconductors; AT&T, Inc, a large telecommunications company; Deere & Company, a company that manufactures heavy equipment for construction and farming; and Pfizer, Inc, a pharmaceutical company. The data for the companies, presented in the order of the amount of their sales in millions of dollars, are:

Required
Based on these financial data and your knowledge and assumptions about the nature of the businesses that the companies operate, determine which data relate to which companies. Write a memorandum explaining your decisions. Include a discussion of which ratios you used in your analysis, and show the computations of these ratios in yourmemorandum.

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Sales Cost of goods sold Net income Inventory Accounts receivable Total assets $124,280 S67,809 16,279 8,257 14,612 8,405 268,488 95,014 S23,573 17,399 1,865 3,063 26,848 43,267 $6,494 3,533 471 632 968 4,964 52,263 19,864 13,610