Can u explain the answer ... also how to read these analysis item by item ... what each item means

NO.211 Which of the following statements is NOT true regarding Company A? Exhibit: 82 IT Certification Guaranteed, The Easy Way! Financial Ratios Analysis for Company A 2012 2013 Current ratio 1.56 2.38 Quick ratio 0.96 1.70 Profit margin 5% 8% Return on equity 21% 30% Accounts receivable turnover 35 42 Average collection period 10.4 8.7 Inventory turnover 28 19 Days sales in inventory 13 19 A. The solvency of Company A increased in 2013. B. The profitability of Company A increased in 2013. C. The efficiency in collecting receivables of Company A increased in 2013. D. The efficiency in using inventory of Company A increased in 2013. Answer: D