问一道英语题目.会的人进.是一道阅读理解题.

问一道英语题目.会的人进.是一道阅读理解题.
One day an old man is going home by train.One of his shoes falls to the ground,but the train starts.He can't pick up the fallen shoe.Then he takes off the other one and throws it to the ground.A boy beside him asks him,"Why do you do that?" he answers,"If a man picks them up,he may get a pair of shoes."
提问：
From this story,we can see ____.
A:the old man is kind(心地善良)
B:the old man doesn't like his shoes
C:the old man is very rich(富有的)