During a recent upper respiratory tract infection, you notice that the lymph nodes underneath your mandible have enlarged over the last 2 days and are now palpable. This is a result of which of the following? (QID 133224)
A. virally induced B-cell lymphoma
B. sequestering of aged RBC for destruction and recycling
C. impaired filtrations of interstitial fluid from local extracellular spaces
D. B-cell proliferation for the humoral immune response