Consider the following information for firm $4.$ Fixed assets is $2,000.$ Current assets is $1,000.$ Total shareholders'

equity is $1,500.$ Current liabilities is $500.$ Long$-$term liabilities is $1,000.$ The book debt ratio is closest to$?$

Select one:

a$.0\mathrm{.}50$

b$.0\mathrm{.}65$

C$.0\mathrm{.}25$

d$.0\mathrm{.}55$