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: Anatomy
All the following are derivatives of the neural crest, EXCEPT: 
Select and explain. 
A. Melanocyte, B. Adrenal medulla, C. Sympathetic ganglia, D. Cauda equina
D: Cauda equina
Answer: D: Cauda equina 
Explanation: D i.e. Cauda equine