B. Bildungsroman
This comes from the word "bildung" which means education and "roman" which means novel. A bildungsroman is a type of novel that deals with the education or development of a young protagonist. Many young adult novels deal with this issue as it is a universal theme that applies to all people across all cultures. A bildungsroman could be written in the form of a realistic novel or novella, but a bildungsroman is specific to a coming of age story.
