<prompt> The initial response to iron therapy in a child suffering from iron-deficiency anemia isReticulocytosisReplacement of intracellular iron enzymesInitial bone marrow responseErythroid hyperplasia  <response>: Response to iron therapy can be documented by an increase in reticulocytes 5-10 days after the initiation of iron therapy. The hemoglobin concentration increases by about 1 gdL weekly until normal values are restored Replacement of intracellular iron enzymes Ref essential paediatrics op ghai 9e 