Which of the following enzymes or processes can be involved in repairing DNA in E. coli damaged by UV light-induced formation of a thymine dimer?
a) DNA ligase seals the newly synthesized strand to undamaged DNA to form the intact molecule.
b) The UvrABC enzyme (exonuclease) hydrolyzes phosphodiester bonds on both sides of the thymine dimer.
c) DNA polymerase I fills in the gap created by the removal of the oligonucleotide bearing the thymine dimer.
d) The UvrABC enzyme recognizes a distortion in the DNA helix caused by the thymine dimer.