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': 'During pregnancy, deficiency of which vitamin in women causes neural tube defect in the newborn: March 2010 \nSelect and explain. \nA. Thiamine, B. Pyridoxine, C. Folic acid, D. Cyanocobalamin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Folk acid Deficiency of : Thiamine causes Ben Beni, neuritis Pyridoxine causes Convulsion, hyperirritability Folic acid causes sprue, Anemia and neural tube defect in the newborn born to folate-deficient mothers Cyanocobalamin causes pernicious anemia, loss of vibration and position sense, dementia, abnormal gait', 'role': 'assistant'}]