A 45 year old male comes to your clinic complaining of recent night sweats and enlarging lymph nodes. A diagnosis of mixed cellularity Hodgkin lymphoma is made. Peripheral blood smear also shows increased number of a particular cell type. Which of the following molecules is responsible for proliferation of the specific cells seen in the slide.
A. IL-6
B. TNF-a
C. PDGF
D. IL-1
E. IL-5
F. IL-10