In General,the Capital Structures Used by Non-Financial U.S.firms

In general,the capital structures used by non-financial U.S.firms:

A) typically result in debt-to-asset ratios between 60 and 80 percent.
B) tend to converge to the same proportions of debt and equity.
C) tend to be those that maximize the use of the firm's available tax shelters.
D) vary significantly across industries.
E) None of the above.