How Might You Characterize the Patterning of the Nervous System

How might you characterize the patterning of the nervous system with regard to the migration of neurons along radial cells?

A) the nervous system is built from the outside in
B) the nervous system is built from the inside out
C) some parts of the nervous system are built from the inside out; some outside in
D) during neurogenesis, neurons migrate first to the ventricle and then to their final destination