Do you know that man? He is my uncle. His name is David Smith. He is forty-eight this year. He is a worker. He works in a car factory. His factory is not near his home. So he gets up early in the morning and takes a bus to work. At about seven thirty, he gets to his factory. He makes the parts of the car. He works very hard. Everyone likes him and he is a good worker. He has his lunch in the factory. He often plays basketball after work. In the evening, he sometimes learns Chinese at home. His Chinese is very good, too. Sometimes he helps me with my Chinese. I like my uncle very much. The man is ______.
选项：

A: a teacher
B: a bus driver
C: a worker
D: a player