A 15-year-old girl is taking primaquine for a parasitic infection and notices her urine is a brownish color. A CBC shows mild anemia. The laboratorian performing the reticulocyte count notices numerous irregular shaped granules near the periphery of the RBC. These cellular inclusions are most likely:
A. Howell-Jolly bodies
B. basophilic stippling
C. Heinz bodies
D. Pappenheimer bodies