新题求问了，好像是og10来的

1998JIN

2. Carbon-14 dating reveals that the megalithic monuments in Brittany are nearly 2,000 years as old as any of their supposed Mediterranean predecessors.
A. as old as any of their supposed
B. older than any of their supposed
C. as old as their supposed
D. older than any of their supposedly
E. as old as their supposedly



我怎么才能知道是as old as还是older than 呢？毕竟句意上后面比较的是一个叫做地中海祖先的东西？？？我怎么能知道他竟然发现的比假想的祖先还老呢。。。
那C 说和他们假想的祖先一样老为什么就不对呢？
再说了，不是应该按照选项A的句意理解题目吗。。。
最后，any of 假想的地中海祖先是什么意思，他们假想了好多个地中海巨石祖先吗。。。
这题做完感觉好无语啊

只排除了DE