关于条件状语从句，求解释og里一道题！

azurayuan

Affording strategic proximity to the Strait of Gibraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that if they did not hold it, their grip on Algeria was always insecure.
A if they did not hold it, their grip on Algeria was always insecure
B without it their grip on Algeria would never be secure  
C their grip on Algeria was not ever secure if they did not hold it  
D without that, they could never be secure about their grip on Algeria
E never would their grip on Algeria be secure if they did not hold it  
正确答案是b，我理解b是对的。那么e的错误在于倒装还是代词指代问题？
求好心人解释一下！靴靴O(∩_∩)O

Fiona09

个人觉得E项中的it指代有些歧义，it 既可以说指代Morocco，也可以说指代Algeria。。而题干的意思明显是说要hold Morocco