The following information (in millions) was taken from the December 31 financial statements of Canadian National Railway Company (CN): 2018 2017 2016 $1,195 $1,000 $903 Accounts receivable, gross Allowance for doubtful accounts 26 16 28 1.169 984 875 14,321 13,041 12,037 Accounts receivable, net Revenues Total current assets Total current liabilities 2,728 2,190 2,107 3,500 3,983 3,008 (a) For 2018 and 2017 calculate CN's current ratio, receivables turnover, and average collection period. (Round answers to 1 decimal place, c.8.5.2) 2018 2017 Current ratio :1 :1 Receivables turnover times times Average collection period days days