難題 ....救救我...

A study published in the BMJ showed that women who ate nuts more than five times a week were about one third less likely to suffer from coronary heart disease than women eating no nuts at all.

E. than were those who ate

為何是e對呢, 我認為a沒有錯啊...

原文比较的是：

women (who ate...) were less likely ... than women (who ate...) were. 这里用了倒装和代词。

A中的eating和前面的ate不平行，并且从句结构和分词结构也不平行，所以不对。

动词补出 ？