Your company is considering purchasing data center computer servers for $$50,000$ up front. You can earn $$5,000$ in year $1,$ $$15,000$ in year $2,$ $$18,000$ in year $3,$ and $$22,000$ in year $4.$ Calculate the net present value of your data center if money costs $8\mathrm{.}5\%$ annually?

Question $18$ options:

$-2683$

$-2784$

$+2784$

none of the above

$+2683$