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
[{'content': 'Cerberus is associated with development of: \nSelect and explain. \nA. Head, B. Lung, C. Liver, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: The cells in the hypoblast (endoderm) at the cephalic margin of the disc form the anterior visceral endoderm, which expresses head forming genes, including OTX2, LIM1, and HESX1 and the secreted factor Cerberus. Ref: Langman's embryology 11th edition Chapter 5.", 'role': 'assistant'}]