Question: A 4-year-old white child named Mark Christianson was admitted to the hospital for a broken leg. His routine blood work results were as follows: RBC 5.59 X 106/uL HB 11.0 g/dL HCT 36% Red cell morphology: marked microcytosis; hypochromasia; marked target cells and moderate basophilic stippling. What test would be most useful in confirming this diagnosis? A. Iron Studies B. Folate and B12 Levels C. Sickle Solubility D. Hemoglobin Electrophoresis