Q9: PP 51.
A study on couples' retirement transitionsfound that women who took new jobs after retiring from their primary careersreported high marital satisfaction, more so than those who retiredcompletely.


A.
A. more so than those who retired
B.
B. which was more than if they had retired
C.
C. more than when retiring
D.
D. more than if they were to retire
E.
E. which was more so than those retiring


       答案是A，more so有这样的用法吗？望高人指教！

是的，more so 是这样用的。