The correct option is A Two nucleosome
Linker DNA is double-stranded DNA in between two nucleosome cores that, in association with histone H1, holds the cores together. Linker DNA connects to histone H1 and histone H1 sits on the nucleosome core. Nucleosome is technically the consolidation of a nucleosome core and one adjacent linker DNA; however, the term nucleosome is used freely for solely the core. Linker DNA may be degraded by endonucleases.