Is the Following Statement True or False? the Only Single-Celled

Is the following statement true or false? The only single-celled organismsare prokaryotes, such asarchaeans and bacteria.

A) true, because prokaryotes are the simplest cell form
B) true, because all eukaryotes are multicellular
C) false, because some eukaryotes, including protista, are single-celled
D) false, because some prokaryotes are multicellular
E) false, because all single-celled organisms are prokaryotes