114 A study on couples' retirement transitions found that women who took new jobs after retiring from their primary careers reported high marital satisfaction, more than when retiring completely.
a, more than when retiring
b, more than if they were to retire
c, more so than those who retired
d,which was more so than those retiring
e, which was more than if they hand retired
the answer is c,
不明白 c中的so 指代satisfaction, satisfaction不是名词吗？so不是代替动词（动作）的吗？请牛人给指点，痛苦等待中....... | 
