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: Pediatrics
Child of 6 weeks with Hemoglobin of 10 gm% pale on examination, diagnosis is ? 
Select and explain. 
A. Physiological anemia, B. Pathological anemia, C. Thalassemia, D. Iron dificiency anemia
A: Physiological anemia
Answer: A: Physiological anemia 
Explanation: Ans. is 'a' i.e., Physiological anemia Physiologic Anemia of Infancy Hemoglobin drops to low point at age 6 to 8 weeks Erythropoietin nadir drops Hemoglobin Term Infants: Hemoglobin drops to 9-11 g/dl Preterm Infants: Hemoglobin drops to 7-9 g/dl No work-up or treatment unless Hemoglobin lower than expected Other point ? Hemoglobin g/dl cut off- . (WHO/UNU-1996) 6mo-5yr <11.0; 5-11 yr - 11.5; 12-13 yr -12.0g/d1; Men - 13.0 Women Non-pregnant - 12.0;Pregnant - 11.0