What are the main structural components of cell nucleus?

What are the main structural components of cell nucleus?

1. Karyolemma, chromatin, nucleoli, chromosomes


2. Karyolemma, heterochromatin, euchromatin, nucleoli.


3. Karyolemma, nucleoli, heterochromatin, karyoplasms.


4. Karyolemma, chromosomes, euchromatin, karyoplasms.


5. *Karyolemma, karyoplasm , chromatin, nucleoli.