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: Medicine
[{'content': 'Kespar Hauser syndrome is due to \nSelect and explain. \nA. Constitutional delayed growth, B. Growth hormone deficiency, C. Growth hormone insensitivity, D. Psychosocial causes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]