If the Q₁₀ of the Metabolic Rate of an Animal

If the Q₁₀ of the metabolic rate of an animal is 2, then

A) the animal is better acclimatized to a cold environment than if its Q₁₀ is 3.
B) the animal is an ectotherm.
C) the animal consumes half as much oxygen per hour at 20°C as it does at 30°C.
D) the animal's metabolic rate is not at basal levels.
E) the animal produces twice as much heat at 20°C as it does at 30°C.