Your aunt retired today. She has $\backslash (\backslash$$ $3\mathrm{.}50\backslash )$ million in her retirement account as of today. If her retirement account grows at an annual interest rate of $\backslash (9\mathrm{.}0\backslash \%\backslash ),$ how many years would it take for your aunt's retirement account to triple?

A$)9\mathrm{.}29$ years

B$)10\mathrm{.}33$ years

C$)11\mathrm{.}47$ years

D$)12\mathrm{.}75$ years

E$)14\mathrm{.}02$ years