A firm's Debt$/$Equity ratio is $0\mathrm{.}75.$ Which of the following ratios is correct?

A$.$ Total Equity$/$Total Debt $=1\mathrm{.}40$

B$.$ Total Debt$/$Total Assets $=0\mathrm{.}43$

C$.$ Total Equity$/$Total Assets $=1\mathrm{.}75$

D$.$ Total Assets$/$Total Equity $=0\mathrm{.}57$