Dear student,
Eubacteria includes both A) Blue green algae & C) cynobacteria and prokaryotes
Eubacteria, or microorganisms lacking a defined membrane nucleus i.e., a Prokariyote
Eubacteria are typically classified into five different phylums: Chlamydias, Cyanobacteria (Blue-green algae), Gram-positive bacteria, Proteobacteria, and Spirochetes.
Regards