Mutations Are Usually Rare,because

Mutations are usually rare,because

A) Okazaki fragments are removed, whenever detected by the ligase enzyme.
B) transcription, after replication, will normally detect and fix mutations.
C) ligases serve to conduct "quality control" checks in order to repair mutations.
D) DNA polymerase quickly discards mismatched nucleotide base pairs.
E) Both answer options, regarding the role of the ligase enzyme, are correct.