On June 30th, which Harry Potter event did NOT occur?
- A) 1997: Albus Dumbledore is killed.
- B) 2009: The video game adaptation of Harry Potter and the Half-Blood Prince is released.
- C) 2010: Lego Harry Potter: Years 1-4 is released.
- D) 1997: Harry Potter and the Philosopher's Stone is published by Bloomsbury.
- E) They all occurred.