The actual fission reactions that release energy in a nuclear power plant are about:
- A) two-thirds from uranium-235 and one-third from uranium-239
- B) one-third from uranium-235 and two-thirds from uranium-239
- C) two-thirds from uranium-235 and one-third from plutonium-239
- D) one-third from uranium-235 and two-thirds from plutonium-239