<prompt>  A nine month old boy of Sindhi parents presented to you with complaints of pregressive lethargy, irritability pallor since 6 months of age. Examination revealed severe pallor. Investigation showed Hb-3.8 mg; MCV-58 fl; MCH-19.4 pg cell. Blood film shows osmotic fragility is normal target cells and normoblasts. X-ray skull shows expansion of erythroid marrow. Which of the following is the most likely diagnosis -Iron deficiency anemiaAcute lymphoblastic anemiaHemoglobin D diseaseHereditary spherocytosis 