Which of the following is false?

If DJ's has total assets of $300,000, net fixed assets of $120,000, and the average daily operating costs of $3,000, then its value of the interval measure is 60 days.

All else constant, if a firm can decrease its operating costs, then return on equity will decrease.

The portion of net income that a firm reinvests in itself is called the retention ratio.

Ratios that measure how efficiently a firm manages its assets and operations to generate net income are referred to as profitability ratios.