Which one of the following is a correct method of computing the Du Pont identity? (Return on assets) * (Total asset turnover) (Return on equity) * (Equity multiplier) (Profit margin) * (Capital intensity ratio) * (Equity multiplier) (Profit margin) * (1 / Capital intensity ratio) * (1 + Debt-equity ratio) (Equity multiplier) * (Profit margin) * (Return on assets)