Which of the following are solvency ratios? (check all that apply) Select one or more: a. Return on assets ratio: (net income / average total assets) b. Gross profit rate: (gross profit/ net sales) C. Accounts receivable turnover: (net sales / average accounts receivable) d. Return on common stockholders' equity: ((net income - preferred stock dividends) / average common stockholders' equity) e. Inventory turnover: (cost of goods sold / average inventory) f. Current ratio: (current assets / current liabilities) g. Times interest earned ratio: (net income + interest expense + income tax expense) / interest expense) h. Asset turnover ratio: (net sales / average total assets) i. Debt to total assets ratio: (total liabilities / total assets) j. Profit margin: (net income / net sales)