A major step in the pathogenesis of listeriosis is -

• A. The formation of antigen-antibody complexes with resultant complement activation and tissue damage
• B. The release of hyaluronidase by L. monocytogenes, which contributes to its dissemination from local sites
• C. The antiphagocytic activity of the L. monocytogenes capsules
• D. The survival and multiplication of L. monocytogenes within monoculear phagocytes and host epithelial cells