SC求救~

The number of undergraduate degrees in engineering awarded by colleges and universities in the United States increased by more than twice from 1978 to 1985.

(A) increased by more than twice

(B) increased more than two times

(C) more than doubled

D) was more than doubled（C）

(E) had more than doubled

C是正确答案。两倍的表达方式到底应该是怎样的呢？

In 1973 mortgage payments represented twenty-one percent of an average thirty-year-old male’s income; and forty-four percent in 1984.

(A) income; and forty-four percent in 1984

(B) income; in 1984 the figure was forty-four percent

(C) income, and in 1984 forty-four percent

(D) income, forty-four percent in 1984 was the figure（B）

(E) income that rose to forty-four percent in 1984

B正确。完全迷茫~

Having the right hand and arm being crippled by a sniper’s bullet during the First World War, Horace Pippin, a Black American painter, worked by holding the brush in his right hand and guiding its movements with his left.

(A) Having the right hand and arm being crippled by a sniper’s bullet during the First World War

(B) In spite of his right hand and arm being crippled by a sniper’s bullet during the First World War

(C) Because there had been a sniper’s bullet during the First World War that crippled his right hand and arm
(D) The right hand and arm being crippled by a sniper’s bullet during the First World War（E）

(E) His right hand and arm crippled by a sniper’s bullet during the First World War

E正确，那A错在哪里呢？