C-04-Q228mediumsingle_mcqScientific form of 0.02250.02250.0225:a2.25×10−42.25 \times 10^{-4}2.25×10−4b22.5×10−322.5 \times 10^{-3}22.5×10−3c2.25×10−22.25 \times 10^{-2}2.25×10−2d0.225×10−10.225 \times 10^{-1}0.225×10−1