OG81 1984的岐义

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

菜鸟手册对C1984岐义上说：

谈谈C造成的歧义：1984年44%的这个数目是谁和谁比出来的？也就是说是1973年的抵押数目和1984年的收入相比得到的还是1984年的抵押数目和1984年的数目相比得到的，并不清楚，也就是有歧义。

可是我还是看不出来，有没有NN能把两个岐义句子补充完整给我看看呢

谢谢

题中原意：in 1984 mortgage payments represented forty-four percent of an average thirty-year-old male's income.

选项C：and in 1984 forty-four percent，省略的内容太多，可以理解成1973年抵押款与1984年收入相比得到44%：and represented in 1984 forty-four percent of an.......

或者理解成1984年抵押款与1984收入相比