A、Colombia’s contestant. B、Ariadna Gutierrez Arevalo. C、Pia Alonzo Wurtzbach. D、Steve Harvey. C新闻中说到一开始颁错了奖，错把冠军颁给了哥伦比亚选手Ariadna

There was a surprising finish to this year’s Miss Universe contest. At first, it looked as if Colombia’s contestant had won. But it turned out the show’s host announced the wrong winner. Steve Harvey read the name of the second-place finisher, Ariadna Gutierrez Arevalo, as the new Miss Universe. She and Pia Alonzo Wurtzbach of Philippines, who thought she had finished second, hugged. Arevalo accepted the crown and waved to the crowd, thinking she was the winner. Harvey then realized he made a mistake. "I have to apologize," he said, while standing next to Arevalo. Then he awarded the crown to the real winner. The crown went to Wurtzbach. Wurtzbach looked shocked. Arevalo looked confused. The audience screamed. It was an awkward moment for everyone. Harvey said he misread the card he had been given. The episode led to a long night of confusion, hurt feelings and apologies. "Nobody feels worse than me," Harvey told reporters after the show. Harvey wrote about the mistake on Twitter, saying, "I’d like to apologize wholeheartedly to Miss Colombia and Miss Philippines for my huge mistake. I feel terrible."
5. What is the news report mainly about?
6. Who actually won the Miss Universe?
7. What led to the mistake?