Suppose Deak Inc. has two mutually eaclusive projects. The IRR of project $A$ is $20\%$ and of project $B$ fisen. The NPV of project A equals that of project B at a $15\%$ discount rate. Assuming positive discount rates, which of the following is correct?

a$.$ The firm will always accept project B for discount rates Erater than $15\%$

b$.$ The firm will always prefer project A over B for discount rates less than $154$ G

c$.$ The firm will always prefer project B over A for$-$discount rates liess than $20\%$

d$.$ The firm will always accept both project as their IRRs are both greater than $15\%$

$6.$ The firm will always prefer project B over A because B$\text{'}$s IRR is higher than that of A