Which of the following ,if true, most helps to confirm the explanation above?

Boreal owls range over a much larger area than do other owls of similar size. The reason for this behavior is that the small mammals on which owls feed are especially scarce in the forests where boreal owls live, and the relative scarcity of prey requires the owls to range more extensively to find sufficient food.

Which of the following ,if true, most helps to confirm the explanation above?

A Some boreal owls range over an area eight times larger than the area over which any other owl of similar size ranges

B Boreal owls range over larger areas in regions where food of the sort eaten by small mammals is sparse than they do in regions where such food is abundant.

C After their young hatch, boreal owls must hunt more often than before in order to feed both themselves and their newly hatched young

D Sometimes individual boreal owls hunt near a single location for many weeks at a time and do not range rather than a few hundred yards.

E The boreal owl requires less food, relative to its weight, than is required by members of other owl species.

B猫头鹰比其他小size的猫头鹰活动范围更大，是因为他们要扩大范围找猎物，即，活动范围是因为捕捉猎物多少的关系
 
A  重复了原文，但是没有对解释做出支持
B  猫头鹰在食物稀少的地方范围要大过食物充足，讲到食物和活动范围的关系，正确。
C  说孵蛋 照顾小猫头鹰，无关
D  说什么总在一个地方，无关
E  说他们只需要很少的食物，因为体重什么的，无关