which statement best describes the effect of radioactive decay on a nucleus

the resulting nucleus is less stable that the original nucleus. the nucleus must be of the same element as the original.

the resulting nucleus is more stable than the original nucleus. the nucleus must be of the same element as the original

the resulting nucleus is less stable that the original nucleus. the nucleus can be of a different elemant than the original

the resulting nucleas is more stable that the original nucleus. the nucleus can be of a different elemant than the original

The resulting nucleus is less stable than the original nucleus. The nucleus can be of a different element than the original.