A 15 year old girl presented with weakness for 2 months. On examination she had pallor and icterus. Spleen was palpable. Lab examination findings are increased MCV, reduced MCHC, reticulocystosis. Osmotic fragility test is positive and Coomb's test is negative. Diagnosis is
Iron deficiency anemia AIHA G-6-PD deficiency anemia Hereditary spherocytosis