单项选择题

Passage 2
Questions 13 to 15 are based on the passage you have just heard.
[听力原文]13-15
My first visit to the cinema was a very unhappy one. I was taken there by some friends when I was only seven years old. At first there were bright lights and music and I felt quite happy. When the lights went out. I felt afraid. Then the film started and I saw a train on the screen. The train was coming towards me. I shouted out in fear and got down under my seat. When my friends saw me. They started to laugh, I felt ashamed and sat back in my seat. I watched the film to the end but I still felt afraid. I was glad when the film ended.

The writer was taken to the cinema by some friends when how old was he()

A.Seven years old.
B.Seventeen years old.
C.Eleven years old.
D.Twelve years old.