阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

    Two men are walking in the park. One is Mr. Brown, a worker, the other is Mr. Black. Mr. Brown is going to a chair. It is beside the road. Mr. Black is after him. Mr. Brown finds Mr. Black. Now Mr. Black begins to walk faster (更快), because he wants to get to the chair before Mr. Black. Now Mr. Black begins to walk faster because he also wants to get to the chair first. Then they both run. Mr. Black runs faster than (比) Mr. Brown. So he gets to the chair first and sits down on it. Mr. Brown runs after Mr. Black. When he gets to the chair, he sees Mr. Black sitting on it. He is sorry to show a notice (通知) with the words "Wet Paint (油漆未干)" to Mr. Black. Now Mr. Black knows why Mr. Brown is going to the chair.