The blood test of a child, who was fed cow's milk formula, detects severe anemia: erythrocytes - 4⋅10¹² /L, hemoglobin - 65 g/L, reticulocytes - 0.1%. What type of anemia has developed in the child?

• A. Hemolytic anemia
• B. Hypoplastic anemia
• C. B12 and folate deficiency anemia
• D. Posthemorrhagic anemia
• E. Iron deficiency anemia