Which of the following facts from Charles Dickens's biography is the most helpful in understanding the themes in his written work?
A. Many of Dickens's novels were first published in installments in magazines
B on February 7, 1812 Dickens was born in Portsmouth, Hampshire, England
C. When he was 12 years old, Dickens was forced to work in a factory and it traumatized him
D. Dickens began by publishing short stories and essays, and then moved on to novels