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: Physiology
[{'content': 'Osteoblasts express which of the following hormone: \nSelect and explain. \nA. PTH., B. Vitamin D3., C. Glucocorticoid., D. All of the above.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Other than these hormones, estrogen is also expressed by osteoblasts receptors.', 'role': 'assistant'}]