What is one proposed method used by a bacterial cell to survive the initial infection attempt by a phage virus and become immunized by "recording" part of the a viral genome sequence using the CRISPR system?

The host's restriction enzyme system cleaves the invading DNA before a successful infection can be initiated.

The host secretes lipid vesicles containing enzymes that degrade the phage

The host has acquired a lysogenic phage in its genome that confers immunity to further infection by the same phage.

The host turns off production of the receptor protein that the phage needs to bind to the cell wall.