比较问题求解

gaonau

我在看比较问题的综合帖时看到这一题， 我觉得应该选c啊，为什么这里可以把they had 省略呢？求解
90.Although Napoleon’s army entered Russia with far more supplies than they had in their previous campaigns, it had provisions for only twenty-four days.
(A) they had in their previous campaigns
(B) their previous campaigns had had
(C) they had for any previous campaign
(D) in their previous campaigns
(E) for any previous campaign
the key:E。
比较考点：介词短语在比较句中的运用？？

bitterbeauty

Napoleon’s army 是单数，ABCD都排除了