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': 'What is the value of color index in microcytic hypochromic anemia associated with pregnancy : \nSelect and explain. \nA. One, B. Less than one, C. More than one, D. Three', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Less than one', 'role': 'assistant'}]