Which of the Following Statements About Pol I Is FALSE

Which of the following statements about Pol I is FALSE?

A) Experiments demonstrate that Pol I exhibits exonuclease activity.
B) Pol I is not the primary replicase in E.coli.
C) Mutation analysis demonstrates that Pol I functions in DNA repair.
D) Mutation analysis demonstrates the Pol I activity is not essential for cell viability.
E) Experiments have successfully utilized Pol I to radioactively label DNA in lab experiments.