In addition to highly repetitive and unique DNA sequences,a third category of DNA sequences exists.What is it called,and what types of elements are involved in it?

A)multiple gene family DNA; hemoglobin and 5.0S RNA
B)permissive DNA; centromeres and heterochromatin
C)dominant DNA; euchromatin and heterochromatin
D)composite DNA; telomeres and heterochromatin
E)moderately repetitive DNA; SINEs,LINEs,and VNTRs