The question asks for the <u>BEST</u> resolution or in other words, the best ending. B is the best ending because it's positive and solves the problem that the character was facing. My apoligies if my explanation comes off as confusing. I'm not the best at explaining things.
Losing the one I love the most, sure I have a family but he's the only one that helped me get through things, and he was there for me when I needed someone the most.