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The following information (in millions) was taken from the December 31 financial statements of Canadian National Railway Company (CN): Accounts receivable, gross Allowance for doubtful accounts Accounts receivable, net Revenues Total current assets Total current liabilities 2018 $1,195 26 1,169 14,321 2.728 3,500 2017 $1,000 16 984 13,041 2.190 3.983 2016 $903 28 875 12.037 2.107 3,008 (a) For 2018 and 2017 calculate CN's current ratio receivables turnover, and average collection period. (Round answers to 1 dec place, es 5.2) 2018 2017 0.78 1 0.55 1 Current ratio 13 times times Receivables turnover 28.1 days 26.1 days Average collection period