Please answer the following question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mr. Clinton and his 13-year-old son Tony are baseball fans. Last October 10th was Tony's birthday, so Mr. Clinton decided to drive him to New York, for the first game of the World Series . They had no ticket but hoped to buy a pair from others. After they arrived, they walked in the street for two hours, carrying a sign, "We need two tickets." Then they found the cheapest ticket was $200. They were about to leave when suddenly a man stopped them. He took out two tickets and handed them to Mr. Clinton. "How much do you want?" "Just a present." said the man, "Enjoy the game." Mr. Clinton wouldn't accept, so the man explained, "I'm Jackson. Hans is my boss. He and his wife haven't missed a World Series in 18 years. But he is ill and can't watch the game this time. So he told me to give the two tickets to people who would actually enjoy the game. Then I saw you and I followed you for a while. You seemed very sad. You made me think of my dad and me when I was a child. I dreamed of going to a World Series game with my father. But my dream never came true." How do you suppose this made Mr. Clinton and his son feel? Here is what Mr. Clinton said: "This is the most wonderful thing that ever happened to us. My boy and I must have turned to each other over 30 times and said, 'I can't believe this.' We still never forget Jackson and Hans." Options: A $100 B $ 200 C $ 300 D $ 400 Answer: D $ 400 Question:
A:
The two tickets from Jackson saved Mr. Clinton at least _ .