Assume the adjoining chart shows the 1980 U.S. population, in millions, for each region by ethnic group. To the nearest
\begin{array}{l|cccc}
& \mathrm{NE} & \mathrm{MW} & \text{South} & \text{West} \\
\hline
\text{White} & 42 & 52 & 57 & 35 \\
\text{Black} & 5 & 5 & 15 & 2 \\
\text{Asian} & 1 & 1 & 1 & 3 \\
\text{Other} & 1 & 1 & 2 & 4 \\
\end{array}
percent, what percent of the U.S. Black population lived in the South?
Answer Choices
A. 20 \%
B. 25 \%
C. 40 \%
D. 56 \%
E. 80 \%