The following statement about the traditional DuPont analysis system is correct ().

The system takes the net interest rate of equity as the core, takes the net interest rate of total assets and the equity multiplier as the decomposition factors, and focuses on revealing the influence of enterprise profitability and leverage level on the net interest rate of equity, as well as the interaction between related indicators, so the expression of option A is correct; In DuPont analysis system, generally speaking, enterprises with higher net interest rate of total assets have lower financial leverage, and vice versa, so the expression of option B is incorrect; The limitation of the traditional DuPont analysis system is that it does not distinguish the profit and loss of financial activities from the profit and loss of operating activities, financial assets from operating assets, financial liabilities from operating liabilities, so the expression of option C is incorrect; Net interest rate = operating net interest rate × total assets turnover rate × equity multiplier. Therefore, the driving factors of net interest rate are operating net interest rate, total assets turnover times and equity multiplier, so the statement of option D is incorrect.