Five Major Types of Chromatin Were Identified in Studies Performed

Five major types of chromatin were identified in studies performed on Drosophila melanogaster cells, although much more remains to be learned about chromatin diversity and dynamics. Which of the following is correct regarding these findings in Drosophila?

A) These results were obtained using the 3C technique, which determines the positions of loops in the chromatin.
B) According to these results, there are four types of heterochromatin and only one type of euchromatin.
C) The Polycomb form of chromatin belongs to the euchromatin type.
D) In addition to these five major types of chromatin, there seem to be additional minor types as well.
E) The pattern of chromatin types in the chromosomes is constant across the different cell types in a multicellular organism.