Please help

\begin{tabular}{l} 9. Assume the projects "A", "B" and " C " require the following rates to adjust for their riskin \\ "A" =20%;"B"=15% and " C"=13%. \\ Using the risk rate required for each independent operation, AND these are mutually \\ exclusive projects, which project, if any, would be selected as best? \\ \hline 10 In looking at IRR, which project has the highest guaranteed retum on investment? \end{tabular}