Month of Amounts receivable origin July $3,945 August 1980 September 33990 October 15110 November 51975 December 193005 Year-end accounts receivable 300005 Accounts receivable management 300,005 This table above, shows that Blair Supply had an end-of-year accounts receivable balance of $ 2.40. The table also shows how much of the receivables balance originated in each of the previous six months. The company had annual sales of million and it normally extends -day credit terms to its customers. a. Use the year-end total to evaluate the firm's collection system. b. If 70% of the firm's sales occur between July and December, would this affect the validity of your conclusion in part a? Explain