A project requires an investment of $4$ at times $0$ and $6.$ It has a single positive cash flow of $12$ at time $3.$

What is the $($positive$)$ Internal Rate of Return on this project?

$0\mathrm{.}09$

$0\mathrm{.}11$

$0\mathrm{.}23$

$0\mathrm{.}38$

$0\mathrm{.}50$