With reference to DNA repair, which of the following statements, if any, is false?

• A. In the great majority of cases, DNA repair is some kind of mechanism that does not directly reverse the molecular steps that cause DNA damage.
• B. Most of the time DNA repair involves a mechanism that makes a repair to both DNA strands.
• C. When DNA repair involves repairing both DNA strands, the accuracy of the repair is higher in cells where the DNA has replicated than in cells before DNA replication.
• D. DNA repair mechanisms are not evolutionarily well-conserved; human repair mechanisms differ significantly from those in the cells of other vertebrates.