Question $23(2$ points$)$

Which of the following strategies does influenzavirus use to evade the immune system?

Complement inactivation using C$3$ degrading proteinase.

Antigenic variation through antigenic shift and antigenic drift.

Coagulase to build up a barricade of red blood cells around itself.

Host cell mimicry using $M$ protein to disguise itself as myosin from muscle cells.