A nurse is doing prenatal counseling with a client and is asked about the importance of folic acid (B9) during pregnancy. Based on the nurse's knowledge, what should be the nurse's response?

A. Folic acid does not specifically lower blood glucose; rather, it is primarily involved in DNA synthesis and cell division. B. Folic acid is essential during pregnancy as it significantly reduces the risk of neural tube defects, such as spina bifida and anencephaly, in the developing fetus, making it a critical nutrient for pregnant women. C. Folic acid does not prevent celiac disease; rather, celiac disease is an autoimmune disorder related to gluten intake. D. While some studies suggest that folic acid may have a role in reducing the frequency of migraines, it is not a primary indication during pregnancy.