Some researchers argue that short telomeres actually facilitate a longer life span in mammals.The reasoning for this argument includes the idea that ________.

A) the activity of telomerase expression―the enzyme that can restore lost bits of telomeres―is repressed
B) a reduction in the telomere size for every DNA replication event can serve as an accurate counting mechanism for the number of times a cell has divided
C) reducing the number of divisions a cell will go through will also reduce the likelihood of mutation events occurring in the cell's DNA
D) All of the above are included in this idea.