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': 'Simple cuboidal epithelium is seen in: \nSelect and explain. \nA. Skin, B. Trachea, C. Oesophagus, D. Thyroid gland', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Other sites with the typical cuboidal epithelium are:Surface of ovaryChoroid plexusInner surface of lensPigment cell layer of retina', 'role': 'assistant'}]