This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pediatrics
Liver and spleen produce RBC's for 
Select and explain. 
A. Prenatal life, B. First year of life, C. Upto five years of life, D. Lifelong
A: Prenatal life
Answer: A: Prenatal life 
Explanation: Ans. a (Prenatal life). (Ref. Nelson, Paediatrics, 17th/pg.l599; Dutta, Obst., 4th/pg.42)DEVELOPMENTAL HEMATOPOIESIS OCCURS IN ANATOMICAL STAGESMesoblasticHepaticMyeloidYolk sacLiverBone marrow10-14th day to 10-12 weeks6-8 weeks to throughout the gestation5th month to throughout life long