15. If a firm's Return on Assets (ROA) is equal to its Return on Equity (ROE), then the firm's O Internal Growth Rate must be equal to its Sustainable Growth Rate Stock price must be equal to its earnings per share Retention ratio must be equal to its dividend yield O Net income must be equal to its operating cash flow O depreciation tax shield must be equal to its net income O Degree of must be equal to the fixed costs. bo . on S