希望有人能帮忙解答一下这道语法题~

yigexiaosb

Q32.    p2-sc     28.    (25890-!-item-!-188;#058&002817)

In 1997, despite an economy that marked its sixth full year of uninterrupted expansion with the lowest jobless rate in a quarter century, the number of United States citizens declaring themselves bankrupt has jumped by almost 20 percent, at 1.34 million.

(A) declaring themselves bankrupt has jumped by almost 20 percent, at
(B) declaring themselves bankrupt jumped by almost 20 percent, to
(C) who declared themselves bankrupt has jumped by almost 20 percent, to
(D) who declared themselves bankrupt jumped almost by 20 percent, at
(E) to declare themselves bankrupt jumped almost by 20 percent, at

eshopaholic

是B 吗？