Which of the following statements is NOT part of the cell theory?
选项：

A: All cells replicate their DNA at least once every 24 hours.;
B:Cells can arise only by division from a pre-existing cell.;
C:All cells contain a plasma membrane, a nucleus delimited by a nuclear membrane, mitochondria, lysosomes, Golgi, plus other organelles.;
D:The cell is the structural unit of life.;
E:Two of the above.