4. Financial Statement Analysis interpretation: 13 marks The following table provides an historical summary of key financial ratios for Hallenstein Glassons Limited (HGL). HGL is a company listed on New Zealand Stock Exchange. It is a retailer of men's and women's clothing in New Zealand and Australia. Ratio 2017 2018 2019 Return on assets % 20.24% 29.72% 37.73% Gross profit margin % 58.85% 61.33% 60.01% 7.23% 9.84% 13.72% Profit margin % Asset Turnover (times) 2.80 3.02 2.75 Days inventory (days) 76.47 days 71.12 days 76.21 days Required: Please answer the following questions after reviewing the table of key financial ratios above: (a) With reference to the above ratios, analyse the trend in HGL's profitability providing possible reasons for any change. (8 marks maximum of 200 words) (b) Explain what a Days inventory ratio is measuring and how it impacts on HGL's profitability. (5 marks maximum of 120 words)