单选题 Speaker A: Haven't I seen you somewhere before?
Speaker B: ______.
Speaker A: But your face is so familiar. Wait a second.... I know.... We were on the same flight to New York last month.
Speaker B: Oh, yes. Now I remember. What a coincidence to meet in San Francisco!
A. No, I think so B. No, I don't think so
C. Yes, I don't think so D. Yes, I think so