I would have to say either B or C...They start off as best friends but then Peter and Anne kiss. No one knows about their relationship though. Also they dont really act like they are dating. This is a tough question really. I would say go with B but if thats wrong then its deffinetly C
"The green mug or the blue cup seem like a good choice" is the only sentence that uses a verb that agrees with its compound subject, since the others have issues with number.
