How do I answer this question using a financial calculator? "What is the payback period of a $$40,000$ investment with the following cash flows?

A$.1\mathrm{.}00$ years

B$.1\mathrm{.}80$ years

C$.2\mathrm{.}00$ years"

D$.2\mathrm{.}25$ years

E$.3\mathrm{.}50$ years