You have $$100,000$ in your savings account and plan to retire with $$750,000$ in the bank in $40$ years. You are hoping to achieve atreasonable rate of return on your investments and want to know the target rate you should be looking for.

Select one:

a$.4\mathrm{.}12$

b$.3\mathrm{.}14$

c$.5\mathrm{.}16$

d$.6\mathrm{.}13$