Eukaryotic telomeres replicate differently than the rest of the chromosome. This is a consequence of which of the following?（2.5）
选项：

A: The evolution of telomerase enzyme
B: DNA polymerase that cannot replicate the leading strand template to its 5' end
C: Gaps left at the 5' end of the lagging strand
D: Gaps left at the 3' end of the lagging strand because of the need for a primer
E: The "no ends" of a circular chromosome