单项选择题

As painful as it was for me to lose a good friend, I knew that it was far worse for them to lose a child.()

A.当我为失去了我的一个好朋友痛苦的时候,我又知道他们失去了一个孩子。
B.我失去了一个好朋友,他们失去了一个孩子都是痛苦的。
C.如同我失去了一位好友非常痛苦一样,我知道对他们来说失去一个孩子要痛苦得多。
D.我痛失了我的一个好朋友,我知道远远比他们失去一个孩子还要痛苦。