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: Social & Preventive Medicine
[{'content': 'The haemoglobin cut-off level for determining prevalence of anemia among pregnant women is – \nSelect and explain. \nA. Less than 15g/dL, B. Less than 13 g/dL, C. Less than 11 g/dL, D. Less than 19 g/dL', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]