A 4-year-old boy with recurrent Staphylococcus aureus and Streptococcus pneumoniae infections presents with fever (38.2°C), lymphadenopathy, and mild splenomegaly. Vital signs show BP 95/60, HR 110/min, RR 22/min, and SpO2 98% on room air. Phagocytic oxidase function and delayed-type hypersensitivity skin testing are normal. Serum immunoglobulin levels show absent IgG and IgA with normal IgM. Lymph node biopsy would most likely reveal which of the following?

1. A)Absence of germinal centersGABARITO
2. B)Depletion of paracortical areas
3. C)Depletion of thymus-dependent areas
4. D)Defective chemotactic response of neutrophils
5. E)Absence of postcapillary venules