I believe your answer is D. a sequence
Hope this helps :)
Answer:
I'm no counselor, but I do live in a boys home. From my experience having several "bff"s, I can only say one thing, and that is if you two are really bffs, then it would be no problem for you to move on and forgive each other. True friends stay friends, and don't break up over a semi-argument. I hope this lifts your day.
Explanation: