Return on equity (ROE) is an important ratio that analysis use to measures a firms profitability. Other things being equal which of the following statements about Return on equity is false?

1. ROE is affected by total asset turnover
2. ROE remains unchanged if both net income and total assets grow at the same rate
3. The capital structure of a firm can affect its ROE
4. Higher sales can cause higher ROE
5. None of the above