Rubber Inc is considering a project that has the following cash flow and WACC data. What is the Project's NPV$?$

Year $0123$

CF $-1480500780600$

WACC $10\%$

a$.$ $$69\mathrm{.}96$

b$.$ $$400$

c$.$ $$234\mathrm{.}98$

d$.$ $$139\mathrm{.}92$

I think I am doing the question right, but my answer doesn't align with any of the answers above. I input this into my ti $83$: npv$(10,-1480,\{500,600,780\})=56\mathrm{.}44$