A 62-year-old man presents with anemia, bone pain, and blurry vision. Which lymphoma does he most likely have, what would be the most useful diagnostic test or procedure one would order, and what would be the characteristic finding?
A. Waldenström macroglobulinemia, serum protein electrophoresis, IgM spike
B. Multiple myeloma, serum protein electrophoresis, IgG spike
C. Follicular lymphoma, lymph node biopsy, small-cleaved cells in follicular pattern
D. HD, lymph node biopsy, lymphocyte-predominant morphology
E. Burkitt lymphoma, lymph node biopsy, mature B lymphocytes in diffuse pattern