All of the following are characteristics of eukaryotic organisms EXCEPT

A) their cells possess a nucleus.
B) all types of eukaryotic cells are surrounded by a cell wall.
C) they are highly compartmentalized and have an endomembrane system.
D) they include organisms with unicellular complex multicellular bodies or unicellular forms.
E) they display aerobic respiration, although some are capable of phototrophy.