Context: Bony fish are a group of animals with similar traits. The following traits can be used to identify bony fish:
They have fins, not limbs.
They live underwater.
They have a skeleton made of bone.
They make eggs with no shells. Observe the animals and read the descriptions.
Select the one animal that has all of the bony fish traits listed above.
A. Wels catfish have a bony skeleton and live in lakes, rivers, and coastal waters. Wels catfish eggs do not have shells for protection. Male catfish guard the eggs until they hatch.
B. Gray tree frogs hatch from eggs without shells. They live underwater when they are tadpoles. They move onto land when they become adults. The moist skin of adult gray tree frogs can be green or gray. The color of their skin helps them hide on rocks or plants.
From the given choices, select the correct answer and reply with the letter of the chosen option.

A