What does Phong do

Choose the letter A, B, C or D to answer these following questions

His name is Phong. He’s twenty four years old and he’s a teacher at Nguyen Du School. This is his student. Her name is Nga. She is fourteen years old. This is his living room. In his living room, there is a table, a chair, a television and two couches.

What does Phong do?