A man is peacefully sitting in his living room, reading a book, when all of a sudden a brick crashes through his window. Trying to catch the perpetrator, he looks out the window and sees three brothers, Mark Smith, Andy Smith, and Phillip Smith running away. The next day he receives a letter saying, "? Smith. He threw that brick through your window." The man decides to ask one of the brothers about the crime. Which of them, however, should he ask?
Edit: typo