The Sea Slug Elysia Chlorotica Absorbs Chloroplasts as It Digests

The sea slug Elysia chlorotica absorbs chloroplasts as it digests algae,allowing the sea slug to live on sunlight and carbon dioxide.This suggests that for both light and carbon reactions

A) photosynthesis can occur from proteins released from a digested chloroplast.
B) regions of a plant outside of the chloroplast are necessary for photosynthesis.
C) chloroplasts alone are sufficient for photosynthesis.
D) some of the algae are not digested and are living symbiotically inside of the sea slugs.
E) photosynthesis can occur outside of a chloroplast in algaE.