Eukaryotic Cells Are Believed to Have Arisen

Eukaryotic cells are believed to have arisen

A) from a symbiotic relationship between primitive nucleated cells and bacterial cells.
B) from the fusion of multiple archaeal cells into a larger,more complex cell.
C) independently from prokaryotic cells.
D) by mutations that lead to changes in plasma membranes,leading to internal membrane-bound organelles.
E) independently from prokaryotic cells by mutations that lead to changes in plasma membranes,leading to internal membrane-bound organelles.