$6.(15$ points$)$ Sabrina Corp. is evaluating the following two mutually exclusive projects. The required return is $\backslash (14\mathrm{.}509\backslash \%\backslash )$ for both projects. a$.$ What is the IRR of each of the project? $(4$ points$)$ b$.$ What is the NPV of each of the project? $(4$ points$)$ c$.$ What is the profitability index $($PI$)$ of each of the project? $(4$ points$)$ d$.$ Which project should Sabrina Corp. choose based on the above information? $(3$ points$)$