Question: Why are higher water temperatures challenging for many fishes? Need Assignment Help? Question options: A) Metabolic rate scales negatively with temperature, but oxygen scales positively with temperature, so higher temperatures require less oxygen and there is more of it available. B) Metabolic rate scales positively with temperature, but oxygen scales negatively with temperature, so higher temperatures require more oxygen and there is less of it available. C) Fishes are cold blooded and higher water temperature decreases metabolic rates D) Higher water temperature is not challenging for fishes