I think you should stick with Girl A and give me Girl B's digits
Y'know, since you're 16 I'm gonna reccomend you choose A & B! A on odd days, B on even days. God knows at 16 I could never get enough action. And it's not like you're gonna end up marrying either of them (well, not very likely anyway). So I say: Don't sweat the girls, do whatever's the most fun!