Use the evidence in the text to select the photosynthetic organism.
A. The Opuntia microdasys cactus gets its green color from chlorophyll. The cactus uses the chlorophyll to capture energy from sunlight. The cactus has yellow spots made of hair-like spines that help protect it.
B. Nembrotha cristata is a sea slug with bright green spots. This sea slug eats jellyfish and takes their stinging cells into its own body. If threatened, the sea slug then shoots out the stinging cells.
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

A