[讨论]GWD1-Q7

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 on 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

我对这道的动词和名词含义产生了怀疑

答案给的是C.我实在是不理解

1.宾语从句的引导词that是不能省略的

2.on average作为插入语

3。不过我也觉得CEO's怎么可以作主语，这种省略结构在GMAT中大部分是错的

请问compare to在这里做什么意思解。我知道C这种结构比较对称，但如果compare to 没有问题，B错在哪里？