This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Embryology 1, Subject name: Anatomy
Amnion is made up of 
Select and explain. 
A. amniogenic cells+splanchnopleuric cells, B. amniogenic cells+somatopleuric cells, C. primary yolk cells+somatopleuric cells, D. primary yolk sac +splanchnopleuric cells
B: amniogenic cells+somatopleuric cells
Answer: B: amniogenic cells+somatopleuric cells 
Explanation: Amnion is made up of Amniogenic cells+ Somatopleuric cells