During Brain Development,the Gyri of the Cerebrum Are Formed Because

Multiple Choice

During brain development,the gyri of the cerebrum are formed because

A) the white matter enlarges faster than the overlying gray matter.
B) the cerebral cortex folds to fit within the cranium.
C) the tracts must be fully formed before gray matter can develop
D) the gray matter grows faster than the underlying white matter.
E) the oligodendrocytes cannot myelinate neurons quickly