Brain Imaging Studies That Examined the Brains of Children Who

Brain imaging studies that examined the brains of children who grew up in different income brackets found that those kids who were raised in the lowest income groups had which of the following brain differences?

A) They had 6% less brain surface than kids raised in more affluent neighborhoods.
B) Their levels of hemispheric lateralization were much higher than kids in higher income brackets.
C) They had reduced thickening of the corpus callosum.
D) They showed higher levels of both white and gray matter.
E) They had higher levels of synaptogenesis.