请教~！

不知道有没有对应的题号什么的，所以就直接发上来了，希望各位大大解释一下~感谢~

A recent review of pay scales indicates that CEO's now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times in 1980.

A.that CEO's now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times

B.that, on average, CEO's now earn 419 times the pay of blue-collar workers, a ratio that compares to 42 times
C.that, on average, CEO's now earn 419 times the pay of blue-collar workers, as compared to 42 times their pay,the ratio
D. CEO's who now earn an average 419 times more pay than blue-collar workers, as compared to 42 times their pay, the ratio
E. CEO's now earning an average of 419 times the pay of blue-collar workers, compared to the ratio of 42 times

答案是C的说。。

c的后面部分的结构不太清楚，然后就是不知道A哪里错了。。。

A recent review of pay scales indicates that CEO's now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times in 1980

比较对象不对等