The softest audible sound has an intensity of I_{0}=10^{-12} \mathrm{~W} / \mathrm{m}^{2}. In terms of the fundamental units of kilograms, meters, and seconds, this is equivalent to
Answer Choices
A. I_{0}=10^{-12} \mathrm{~kg} / \mathrm{s}^{3}
B. I_{0}=10^{-12} \mathrm{~kg} / \mathrm{s}
C. I_{0}=10^{-12} \mathrm{~kg}^{2} \mathrm{~m} / \mathrm{s}
D. I_{0}=10^{-12} \mathrm{~kg}^{2} \mathrm{~m} / \mathrm{s}^{2}
E. I_{0}=10^{-12} \mathrm{~kg} / \mathrm{m} \cdot \mathrm{s}^{3}