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
True about Hematological change in Pregnancy 
Select and explain. 
A. Total blood volume increases 40% by term, B. The hematocrit increases, C. Red cell volume does not increase until 20 weeks, D. Hematocrit increases due to an increased RBC volume relative to plasma volume
A: Total blood volume increases 40% by term
Answer: A: Total blood volume increases 40% by term 
Explanation: Hemoglobin concentration and Hematocrit decrease slightly during pregnancy.