This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal System, Subject name: Radiology
[{'content': "Short metacarpal seen in? \nSelect and explain. \nA. Turner's syndrome, B. Pseudohypoparathyroidism, C. Pseudopseudohypoparathyroidism, D. All of the above", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans DCauses of short metacarpal are: Basal cell nevus syndrome, Idiopathic, Chromosomal: Turner syndrome and Pseudohypo- parathyroidism/pseudopseduohypoparathyroidism, Trauma/ infection.', 'role': 'assistant'}]