For What Purpose Do Bacteria Use Restriction Enzymes

Multiple Choice

For what purpose do bacteria use restriction enzymes?

A) They are used in plasmid exchanges to fuse plasmid DNA.
B) They are used to restrict important nutrients from leaving the bacterial cell.
C) They are used to resist infections by viruses.
D) They are used to cut up and recycle mRNA transcripts.
E) They are used to attach amino acids to tRNA molecules.