英语单选题（请把句意也解释一下，谢谢！）

Question

I woke in a pool of blood, lying on my stomach some distance ____________ I should have been.
A) from which B) from where
C) to which D) to where

Answer 1

B
我在血泊中醒来，趴在地上，与我原本的位置有了一段距离。
where引导宾语从句，充当from的宾语。