A 3-year-old female presents to her pediatrician due to severe, recurrent Staphylococcus aureus abscesses. She demonstrates an absence of pigment in her hair, skin, and eyes. Her infections are possibly due to

A) the inability of the white blood cells to adhere to the blood vessels.
B) a deficiency of killing enzymes in the white blood cells.
C) abnormal granules in the white blood cells.
D) a defect in the complement cascade.

A