This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
All of the following contains Bipolar neurons except 
Select and explain. 
A. Retina, B. Sensory ganglia of cochlear and Vestibular Nerve, C. Dorsal root ganglion, D. Olfactory epithelium
C: Dorsal root ganglion
Answer: C: Dorsal root ganglion 
Explanation: Dorsal root ganglion contains pseudounipolar neurons, not bipolar neurons.