2. Refer to information in Note 1Description of Business and Accounting Policies in the Notes to the Consolidated Financial Statements related to Accounts Receivable. a. Does Amazon.com account for the possibility that some customers or vendors may not fully pay for previous purchases on credit? If so, how? If not, why not? b. Assume that all receivables are Accounts Receivable (i.e., there are no other or vendor receivables). How is the amount reported on the balance sheet different from the ending balance of Accounts Receivable in a given year (Hint: there is a keyword that should tip you off)? Calculate the actual ending balance of Accounts Receivable in 2011 and 2010. c. Suppose that in 2011, Amazon.com receives cash payments for customer purchases made on account in prior periods totaling $1,600 million. Evaluate how well the managers of Amazon.com accounted for the possibility that some customers may not fully pay for purchases made on credit. That is, did the managers of Amazon.com overestimate or underestimate how much they would actually receive from customers and vendors for previous purchases on account? Requirement 2: Briefly answer each question with no more than 2-3 sentences each. If necessary, you may use appropriate T-accounts (e.g., Accounts Receivable) to help explain your responses. http://www.sec.gov/cgi-bin/viewer?action=view&cik=1018724&accession_number=0001193125-12-032846&xbrl_type=v