This is a picture of my family.In this picture, you can see an old man and an old woman. They are my grandfather and my grandmother. They are over seventy years old and both of them are retired workers. They are very kind to all of us. They always help us do a lot of housework. My parents and I enjoy living together with my grandparents. We all love them very much. My father stands behind my grandfather. He is forty-five years old. He is a manager of a company and he is a hardworking man. Behind my grandmother is my mother. She is also forty-five years old but she looks young for her age. She is a teacher at a vocational school. Her classes are always lively and interesting. She is popular with her students.On the right of my father stands a handsome young man, tall and thin. He wears a blue T-shirt and looks rather cool. He is my brother. He is a student at a medical college now. He is dreaming to be a doctor.Look , a pretty girl with a long black hair stands on the left of my mother.My parents and I enjoy living with （） .
选项：

A: my brother
B: my uncle
C: my friends
D: my grandparents