The Nervous System of an Enteropneust Hemichordate (Or Acorn Worm)consists

The nervous system of an enteropneust hemichordate (or acorn worm) consists of

A) a small brain and a dorsal ladder network of ganglia for each body segment.
B) a network or plexus that runs underneath the epithelial cells that fuse to become ventral and dorsal neurochords.
C) a small brain and a ventral ladder network of ganglia for each body segment.
D) no brain but an extensive network of ganglia transferring information from sensory organs to the digestive system.
E) no specialized nerves;the epetheliomusculature must respond to stimuli itself in a manner similar to the cnidarians.