A 3-year old child presented with progressive anaemia, jaundice & failure to thrive. O/E: pallor, splenomegaly are seen Peripheral smear showed normoblasts and small round intensely stained red cells. The likely diagnosis is________________?

A. Here ditary spherocytosis
B. Thalassaemia
C. Sickle cell anaemia
D. Vitamin B12 deficiency anaemia