A major difference between cells of organisms in Domain Eukarya and the cells of those in Domains Bacteria and Archaea is that:

A) Domain Eukarya organisms can only live in acid environments.
B) Domain Bacteria and Archaea cells can only live in acid environments.
C) Domain Bacteria and Archaea cells have a nucleus and Domain Eukarya cells do not.
D) cells of Domain Eukarya have a nucleus and Domains Bacteria and Archaea do not.