DIG Ltd is considering investing $150,000 in a mine that will produce $15,000 worth of ore in the first year. As the ore closest to the surface is removed it will become more difficult to extract the ore. As a result, the value of the ore that is mined will decline at a rate of 8% per year forever. If the appropriate interest rate for valuing this investment is 10% p.a., the net present value of this mining operation today is closest to:

-$66,667.

$37,500.

$83,333.