Which of the Following Methods Do Alkaliphiles Use to Survive

Which of the following methods do alkaliphiles use to survive in their environments?

A) enrich their plasma membrane with acidic compounds to attract H+ ions to their cell surface
B) enrich their plasma membrane with basic compounds to attract OH- ions to their cell surface
C) build special monolayer plasma membranes
D) use proton pumps to export excess protons from the cytoplasm
E) use plasma membrane lipids that are highly branched and saturated