Which of the following is equivalent to 5.6×10−3+2.4×10−35.6 \times 10^{-3} + 2.4 \times 10^{-3}5.6×10−3+2.4×10−3?
8.0×10−68.0 \times 10^{-6}8.0×10−6
8.0×10−38.0 \times 10^{-3}8.0×10−3
8.0×1038.0 \times 10^{3}8.0×103
3.2×10−33.2 \times 10^{-3}3.2×10−3