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': 'Derivative of third pharyngeal pouch is: \nSelect and explain. \nA. Thymus, B. Inferior parathyroid gland, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: In the fifth week, epithelium of the dorsal region of the third pouch differentiates into the inferior parathyroid gland, while the ventral region forms the thymus. Ref: Langman's embryology 11th edition Chapter 16.", 'role': 'assistant'}]