You defined a book data type.

class book:
title = ''
author = ''
pages = 0

Then, you created an instance of your book.

myBook = book()

Which statement assigns a value to the title?

title = 'To Kill a Mockingbird'
myBook.title('To Kill a Mockingbird')
myBook.title = 'To Kill a Mockingbird'
myBook.book.title = myBook.title = 'To Kill a Mockingbird'