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: Pathology
Common site of haematopoiesis in fetus is ? 
Select and explain. 
A. Liver, B. Spleen, C. Bone marrow, D. Gut
A: Liver
Answer: A: Liver 
Explanation: Ans. is 'a' i.e., Liver o In early fetal life erythropoiesis takes place in the yolk sac. o By the third month erythropoiesis moves to liver which is the chief site for erythropoiesis until sholy before bih. o In human adults, erythropoiesis occurs in the bone marrow.