$97.$ A bank has $$200$ in checking deposits. Interest and noninterest costs on these accounts are $4\%.$ This bank has $$400$ in savings and time deposits with interest and noninterest costs of $8\%.$ This bank has $$200$ in equity capital with a cost of $24\%.$ This bank as estimated that reserve requirements, deposit insurance fees and uncollected balances reduce the amount of money available on checking deposits by $10\%$ and on savings and time deposits by $5\%.$ What is this bank$$s before$-$tax cost of funds?

A$)11\mathrm{.}00\%$

B$)11\mathrm{.}32\%$

C$)11\mathrm{.}50\%$

D$)12\mathrm{.}00\%$

E$)$ None of the above

Answer: B