Compute (5.0×103)2(5.0 \times 10^3)^2(5.0×103)2 in scientific notation.
2.5×1072.5 \times 10^72.5×107
2.5×1062.5 \times 10^62.5×106
25×10625 \times 10^625×106
2.5×1052.5 \times 10^52.5×105