When can the D/E ratio be used to find the equity ratio and the debt ratio?

Multiple Choice:

1. when the firm is financed only through debt and preferred stock.

2. when the firm is financed through debt, equity, and preferred stock.

3. when the firm is financed only through equity and preferred stock.

4. when the firm is financed only through debt and equity.

5. the D/E ratio can never be used to find the debt ratio and the equity ratio.