Ch$8.$P$15$b$.(15$ points$)$ Consider the following independent projects $($these are not mutually exclusive$)$:

$\backslash$table$[[$Year$,0,1,2,3,],[$Cash Flow A$,-$$$160,$$$110,$$$60,$$$10,],[$Cash Flow B$,-$$$100,$$$20,$$$50,$$$80,],[10\%NPV,$Payback,IRR$],[,-2\mathrm{.}9,1\mathrm{.}83,8\mathrm{.}6\%,0\mathrm{.}982,],[,19\mathrm{.}6,2\mathrm{.}38,18\mathrm{.}8\%,1\mathrm{.}196,]]$

Whichever project you choose, if any, you require a $10\%$ return on your investment.

a$)$ Calculate each project's payback, and show your work. If you require projects to pay back within $2$ years, which investment$($s$)$ will you choose? Briefly why?