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: Radiology
[{'content': "On USG finding of cystic hygroma in fetus is suggestive of \nSelect and explain. \nA. Down's syndrome, B. Marphan's syndrome, C. Turner's syndrome, D. Klinfelter's syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: C i.e. Turner's Syndrome", 'role': 'assistant'}]