Six friends choose between 3 restaurants: Italian, Chinese, Mexican. Each restaurant is chosen by exactly 2 friends. Amy and Bob choose the same restaurant. Carl chooses Italian. Dan does not choose Mexican. If Amy chooses Chinese, which must be true?

✓ Correct Answer: Option A

Amy and Bob choose same → if Amy=Chinese, Bob=Chinese. Chinese now full (2). Carl=Italian (1 spot left). Dan≠Mexican → Dan=Italian or Chinese. Chinese full → Dan=Italian. Italian now full. Remaining 2 friends go to Mexican. So C: both A and B are true.