Which of the following is true about Haley?

A、When Haley began writing, he thought that he was a great writer. ;
B、 A year after Haley began writing full time, he found that he could hardly support himself by writing.;
C、When Haley decided to work as a freelance writer, he was 20 years old.;
D、When Haley began writing full time, he lived in a room with modern facilities.