I'd say A. 8000, because you'd get the most answers and the biggest variety in answers for a more accurate sample.
I will assume you are using compound interest.
<span>let the amount invested be x </span>
<span>x(1.0575)^25 = 85000 </span>
<span>x = 85000/1.0575^25 = $21,009.20</span>
