This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Phagocytic cells in placenta are : \nSelect and explain. \nA. Hofbauer cells, B. Amniogenic cells, C. Hofmann cells, D. Uterine natural killer cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hofbauer cells are round cells that are capable of phagocytosis and can trap maternal antibodies crossing through the placenta . These cells can express class || major histocompatibility complex molecules. Ref: Dutta Obs 9e pg 28.', 'role': 'assistant'}]