I grew up in Africa ,___at least I should say that I spent much of the first ten years of my life th

题目

I grew up in Africa ,___at least I should say that I spent much of the first ten years of my life there.A.andB.orC.soD.but选B?
为什么

答案

应该选B,
这句话的意思是:我在非洲长大,或者可以说我人生最初的十年有许多都是在那里度过的.
"at least I should say"可以看出用or比较符合语境语气