The Large and Remarkable Pogonophoran Annelids Live near Deep-Ocean Hydrothermal

The large and remarkable pogonophoran annelids live near deep-ocean hydrothermal (volcanic) vents where food items are scarce. Many species are able to obtain enough nutrition because

A) they are able to conduct photosynthesis.
B) their tissues harbor endosymbiotic bacteria that fix carbon by oxidizing hydrogen sulfide and methane.
C) they fix carbon from the minerals found in the ocean's muddy floor.
D) they filter algae out of ocean water.
E) they feed on dead fish that sink to the ocean floor.