Your Interviewer Says to You, "You're a Graduate of That

Your interviewer says to you, "You're a graduate of that snooty private school, aren't you? What makes you think you can cope with regular people?" What is your best response?

A) The question is rude.It is appropriate to politely ask the interviewer to rephrase the question.
B) "You're asking if I can fit into your working community here.I used to live in a town like this."
C) "You're just upset because your daughter had to drop out of school there.I knew her.It was really unfortunate, and I want you to know that I think she's a nice person."
D) "You're asking me a stress-interview question and I don't like it.You are the one who is being snooty.Ask me another question."