Brain Organization Is Hierarchical, Containing Many Different Levels of Organized

Brain organization is hierarchical, containing many different levels of organized units. Which of the following is NOT an example of this hierarchical organization?

A) Central pattern generators that function autonomously, though with inputs that modify their activity
B) The brain is organized at the level of the cerebral cortex, nuclei, neuronal circuits and genetic circuits.
C) The brain contains many examples of convergent pathways, where multiple areas of the brain send signals to a single location.
D) none of the above are examples of hierarchical organization