阅读下列短文，从下面每小题所给的A、B、C、D四个选项中，选出最佳选项。
The next day, Peter came, feeling very angry at the changes. Heidi was always busy with the strange new child. All summer long Heidi hadn't played with him. And today she was coming at last. But again, she would come with this stranger.
Then, Peter saw the wheelchair. He carefully looked around. Then he pushed it down the mountain. He felt a little worried and afraid so he ran away and hid himself in a bush.
Just then, Heidi came out of the house. Her grandfather and Clara came next. Not seeing the wheelchair, Heidi's grandfather decided to carry Clara to the top. As he was getting ready, he wondered why Peter was late.
To their surprise, when they arrived at the top, they saw Peter lying on the ground.
Grandfather put Clara down on the grassland and then went home. The three stayed there. Heidi remembered the place with many flowers. She wanted to take Clara there. She called Peter to help. Peter went to Clara unwillingly. Heidi asked him to help raise Clara from the ground on one side. Heidi helped on the other.
With the encouragement of Heidi, Clara tried a step and soon another. "Oh, Heidi,I can do it! Oh, I really can! Just look! I can take steps!" she said happily.
Heidi cried happily, "Oh, Clara, can you really? Can you walk? Now you can walk, Clara,"
Peter arrived home late that day. He saw many people talking around the wheelchair. What if they found out the truth? A policeman might arrive. They might take him away to prison. Peter's hair stood on end at this thought.
The next morning, Peter admitted his mistake. Clara's family forgave him. What Peter had done turned out to be the greatest good for Clara.
