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
Embgryological development of the human vertebra is from - 
Select and explain. 
A. Somite, B. Endoderm, C. Ectoderm, D. None
A: Somite
Answer: A: Somite 
Explanation: None