Which of the following accurately describes why massive stars can no longer fuse elements at their cores once the core has become exclusively iron? Select one: O A. Fusion of iron does not produce energy, so it is the natural end-point of core fusion. O B. Hydrogen and helium are the only elements that can take part in fusion reactions. OC. The iron core immediately collapses to become a white dwarf. O D. As an element, iron nuclei are unstable, and they immediately decay into other elements. O E. Chuck Norris forbids iron fusion, as he requires massive quantities of it to manufacture his all-in-one workout station, the Total Gym."

Which of the following accurately describes why massive stars can no longer fuse elements at their cores once the core has become exclusively iron? Select one: O A. Fusion of iron does not produce energy, so it is the natural end-point of core fusion. O B. Hydrogen and helium are the only elements that can take part in fusion reactions. OC. The iron core immediately collapses to become a white dwarf. O D. As an element, iron nuclei are unstable, and they immediately decay into other elements. O E. Chuck Norris forbids iron fusion, as he requires massive quantities of it to manufacture his all-in-one workout station, the Total Gym."