Suggest a Survival Advantage for Cyanobacterial Filaments Compared with the Single

Suggest a survival advantage for cyanobacterial filaments compared with the single celled growth pattern seen for cultures such as E.coli: (Select all that apply)

A) nutrients may be shared down the length of a filament
B) nutrient loss may occur along the filament length
C) intercellular communication may allow all cells to synthesize key enzymes
D) intercellular communication leads to differentiation of cell types
E) none is a possible advantage