This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Normal hematopoiesis, Subject name: Pediatrics
[{'content': 'The two embryonic hemoglobins are: \nSelect and explain. \nA. Fetal hemoglobin and Gower hemoglobin, B. Fetal hemoglobin and Poland hemoglobin, C. Poland hemoglobin and HbA2, D. Gower hemoglobin and Poland haemoglobin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Gower and Poland Hb are seen in the embryonic period. - Fetal Hb is predominantly seen after the embryo changes to a fetus HEMOGLOBIN TYPES AT DIFFERENT STAGES OF LIFE:', 'role': 'assistant'}]