The Repair of a Double-Strand Break Can Be Accomplished by ______________

The repair of a double-strand break can be accomplished by ______________, which requires the Ku70/80 protein to _______________________.

A) nonhomologous end joining; catalyze blunt end ligation
B) nonhomologous end joining; bind to both ends of the break
C) homologous recombination; catalyze blunt end ligation
D) homologous recombination; bind to both ends of the break
E) none of the above