Organisms Such as Shigella and Listeria Are Able to Move

Organisms such as Shigella and Listeria are able to move from cell to cell without being detected by the host immune system.What method are they using?

A) production of an actin tail that propels them from cell to cell
B) production of a capsule to avoid antibody binding
C) production of protein A molecules to bind the Fc region of antibodies
D) production of proteins to trigger apoptosis in host cells