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': "Parafollicular 'C' cells develop from: \nSelect and explain. \nA. Parafollicular 'C' cells develop from:, B. Second branchial cleft, C. Ultimobranchial body, D. Third branchial pouch", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C. i.e. Ultimobronchial body', 'role': 'assistant'}]