请教GWD1-Q7

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

我选的是B, 答案是C， 请教达人怎么解释？

题目有争议，有人给出的答案是B，个人支持B。