Your younger sibling asks you to borrow $$20.$ You, a smart financial professional, agree but also charge interest on the $$20.$ You plan to collect $$5$ from your sibling each week for $8$ weeks to repay the initial loan. What is the NPV of this project, assuming you invest the $$5$ at $12\%?$

a$.$ $$4\mathrm{.}84$

b$.$ $$2\mathrm{.}11$

c$.$ $$0$

d$.$ $$6\mathrm{.}88$