Which of the Following Statements About a Not-For-Profit Firm's Sources

Which of the following statements about a not-for-profit firm's sources of capital is most correct?

A) Since not-for-profit firms are tax exempt, there is no tax advantage to debt capital.
B) Fund capital is obtained by retaining earnings--if all earnings are paid out as dividends, no fund capital is created.
C) Preferred stock is never used by not-for-profit firms.
D) Not-for-profit firms are not allowed to raise capital by borrowing.