The BOOK entity listed below describes different books in a book store. There is a problem with this entity. What is the problem?

$\backslash$table$[[$BOOK$],[$BookID: VARCHAR $[$PK$]],[$Title: VARCHAR$],[$AuthorFirstName: VARCHAR$],[$AuthorLastName: VARCHAR$],[$AuthorEmail: VARCHAR$],[$AuthorPhone: VARCHAR$],[$CopyrightDate: VARCHAR$],[$ISBN: VARCHAR$]]$

There is no problem

There is a transitive dependency

There is a functional dependency

ClassID should not be required