When the winter brings seasonal changes, how do northern and southern frogs respond?

Cold-blooded northern and southern frogs migrate to warmer regions to hibernate for the winter.
Frogs are cold-blooded and rely on the outside temperature to keep them warm. In response, they hibernate to stay warm.
Frogs are warm-blooded and rely on the outside temperature to keep them warm. In response, they hibernate to stay warm.
Warm-blooded northern and southern frogs migrate to warmer regions to hibernate for the winter.