If a bank's total assets $=$ $$3,500$ billion, its total liabilities $=$ $$3,200$ billion, and its bank capital $=$ $$300$ billion, its bank capital as a percentage of assets is approximately

Group of answer choices

$9\mathrm{.}4\%.$

$91\mathrm{.}4\%.$

$11\mathrm{.}7\%.$

$8\mathrm{.}6\%.$