Which of the Following Is a Major Advantage of Breeder

Which of the following is a major advantage of breeder nuclear fission?

A) Breeder nuclear fission is responsible for 30% of the electricity needed worldwide.
B) Nonfissionable U-238 is converted to fissionable Pu-239
C) It uses sodium as a coolant, which is safer than using water.
D) It uses uranium-235 as a main energy source.
E) It neither uses nor produces weapons-grade materials.