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: Gynaecology & Obstetrics
[{'content': 'Clinical signs of Hydramnios can be demonstrated when fluid collection is more than : \nSelect and explain. \nA. 1 Itr., B. 2 ltr., C. 3 ltr., D. 4 ltr.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 2 ltr.', 'role': 'assistant'}]