Context: Strawberry poison frogs have poisonous glands in their brightly colored skin. The bright colors serve as a warning sign that the animal is poisonous. The 's skin is adapted to ward off predators.
Figure: strawberry poison frog.
Which animal's skin is better adapted as a warning sign to ward off predators?
A. fire salamander
B. gray tree frog
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

A