One day Mr. and Mrs. Green went shopping by car. They stopped their car near a shop. They bought many things from the shop and the things were very heavy. They wanted to put the things in their car. But Mr. Green couldn’t open the door of the car. "Let’s ask a policeman for help," said Mr. Green. They asked a policeman to help them. The policeman was very friendly to help them open tile door of the car, but he couldn’t open it, either. At that time a young man came and shouted," What are you doing with my car" Mr. Green looked at the number of the car. "Oh, dear! See what we’re doing!" Then said sorry to the young man. Which sentence is wrong according to the story
A. The Greens and the policeman tried to open the door of the wrong car. B. The young man could open the door of tile car. C. Mr. Green forget the number of his car.