The correct option is C Antibodies
Lymph nodes are secondary lymphoid organs which can trap antigens from tissues and vascular spaces and contain lymphocytes i.e., White Blood Cells (B Cell and T cell) which interact with them( antigens) to eliminate these out of the body. The function of lymph nodes is to make clear the lymph. So, lymphocytes are present in the lymph nodes which produces antibodies to eliminate the antigen. Thus, the correct answer is option D.