<prompt> All of the following are minor criteria for multiple Myeloma, ExceptPlasmacytosis 20Multiple lytic lesionsPlasmacytoma on tissue biopsyMonoclonal Ig spike 2gdl for IgA and 3.5 for IgG  <response>: Answer is C Plasmacytoma on tissue biopsy Plasmacytoma or tissue biopsy is a major criterion for diagnosis of multiple myeloma and not a minor criterion 