81. 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(E) income that rose to forty-four percent in 1984
为什么不可以选C呀？这里不能够主谓一起省略吗？是什么道理啊？
谢谢！ | 
