Context: Crustaceans are a group of animals with similar traits. The following traits can be used to identify crustaceans:
They have two pairs of antennae.
They have an exoskeleton. Observe the animals and read the descriptions.
Select the one animal that has all of the crustacean traits listed above.
A. Rock lobsters can live more than 600 feet underwater! They have an exoskeleton and two pairs of antennae.
B. Trichina worms have soft, thin bodies. They have a cylindrical shape and do not have limbs. Trichina worms are not made up of segments. They can infect and feed off of humans, pigs, and other mammals.
Choose the right answer from the options and respond with its letter.

A