Stern Associates is considering a project that has the following cash flow data. What is the project's payback?

Year

$0$

$1$

$2$

$3$

$4$

$5$

Cash flows $-$$$625$$$300$$$310$$$320$$$330$$$340$

$1\mathrm{.}80$ years

$2\mathrm{.}05$ years

$2\mathrm{.}31$ years

$2\mathrm{.}46$ years

$2\mathrm{.}37$ years