请仁慈的G友们帮忙翻译下

11. GWD17-Q11:
            

不明白B选项说的啥意思
                请翻译下
                万分感谢

不明白B选项说的啥意思
        请翻译下
        万分感谢

Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species.  Although snow geese are a popular quarry for hunters in the southern regions where they winter, the hunting season ends if and when hunting has reduced the population by five percent, according to official estimates.  Clearly, dropping this restriction would allow the other species to recover.

Which of the following, if true, most seriously undermines the argument?

A.      Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.

B.       It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.

C.      The number of snow geese taken by hunters each year has grown every year for several years.

D.      As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.

E.       In the snow goose’s winter habitats, the goose faces no significant natural predation.

B. 已经有很多年没有出现因为这个规定导致雪雁狩猎期提前结束的情况。

潜台词是狩猎人之前已经有很多年对雪雁的狩猎都没有没有在狩猎期内到达总雪雁数量的5%。也就是即使你把这条线划到10%，人家还是达不到5%这个目标，从而对整体没有任何影响。

thank you