The MARR for a project is $35\%$ per year and the IRR of cost alternative A $($the lower

initial cost alternative$)$ is $60\%,$ the IRR of cost alternative B $($the second lowest initial

cost alternative$)$ is $50\%$ and the IRR of cost alternative C $($the highest initial cost

alternative$)$ is $40\%.$ If the incremental IRR, AIRR $($B$-$A$)$ is $30\%,$ the AIRR $($C$-$A$)$ is $40\%$

and the AIRR $($C$-$B$)$ is $30\%$ what is the best alternative if they are mutually exclusive

projects?

All three A$,$ B $,$ and C

Alternative A

Alternative B

Alternative C

None of the above