27 A 3-year-old boy has had a succession of respiratory infections during the past 6 months. On physical examination, thechild appears chronically ill, listless, and underdeveloped. He is 50% of ideal body weight and has marked muscle wasting. Laboratory findings include hemoglobin, 9.4 g/dL; hematocrit, 27.9%; MCV, 75 m; platelet count, 182,000/mm; WBC count, 6730/mm; serum albumin, 4.1 g/dL; total protein, 6.8 g/dL; glucose, 52 mg/dL; and creatinine, 0.3 mg/dL. Which of the following conditions is most likely to explain these findings? (A) Marasmus (B) Leukemia (C) Folate deficiency (D) Kwashiorkor (E) Bulimia (F) Lead poisoning