Okay, I read this book <em>and </em>watched the movie. The book is about African Americans and how police shoot innocent teens because police think they have "a gun." This was the first part. The other is how the main character "Starr" coped with Khalil's death.
Angie Thomas wrote this book because of fatal African American shootings. She came up with the title because a song that came up in the book by Tupac, "the hate u gave little infants....everybody"
(By the way, really recommend the movie, it is super emotional!)
The answer for your following question above is : top edges of the back A and front B. The top edges of the sides C have to be even with the top edges of the back a and front B