When I was walking down the street one day, I found a small bag on the ground. I picked it up and opened it to see if I could find out the owner's name.There was nothing inside it except some dollars and an old photo--- a picture of a woman and a young girl about twelve years old. I put the photo back and took the bag to the police station.Before I left, the policeman wrote down my name and address.He thought the owner might want to thank me. That evening I went to have dinner with my aunt and uncle.They had also asked a young woman to have dinner with us.Her face was familiar, but I couldn't remember where I had seen her.During our talk, the young woman happened to say that she had lost her bag that afternoon.At once I remembered where I had seen her.She was the young girl in the photo, though she was now much older.She was very surprised, of course, when I told her about the bag. After dinner we went to the police station and she got back her bag.The policeman said to me, "It's a wonderful thing.You not only found the bag, but also the owner of the bag." The writer knew the young woman because _ . A) he had met her somewhere before B) she looked like the girl in the picture C) she often had meals with the writer D) she was the old woman in the photo
B