SAS was used to compare the high school dropout rates for the 30 school districts in one city in 2010 and 2012. The box plots generated for these dropout rates are shown below.

Compare the center of the distributions and the variation of the distributions for the two years.

YEAR20102012

A. Dropout rates had a higher average with less variability in 2010 than in 2012.

B. Dropout rates had a lower average with less variability in 2010 than in 2012.

C. Dropout rates had a higher average with more variability in 2010 than in 2012.

D. Dropout rates had a lower average with more variability in 2010 than in 2012.