I think B would be the best answer, but i would execute it differently. I wouldn't just walk up to the guy/girl and say "I'd like to get to know you better". I mood has to be right. So for example, if its a girl and the two are talking, you might crack a joke have her giggle a bit, then say, "Hey, you know, I'd really like to get to know you better". That's how I'd execute it.