Which innovative brand storytelling technique did Bloomsbury Publishing use to launch an unknown J.K. Rowling's first Harry Potter book in 1997, creating immediate mystique around the author?

The publishing industry has evolved tremendously in how it markets books and authors. Brand storytelling has become an essential strategy for publishers and authors alike, creating narratives around literary works that extend beyond the pages. This trivia tests your knowledge about innovative brand storytelling techniques that have revolutionized book marketing and created cultural phenomena around certain literary works and authors. How well do you know the strategies behind some of literature's biggest commercial successes?

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They released adult and children's editions with different covers simultaneously, allowing the book to be marketed to multiple demographics without stigma
They created an alternate reality game where readers could solve puzzles online to unlock chapters before the official release date
They distributed the first three chapters free in newspapers and required readers to mail in requests for the complete book
They launched a fake biography of Rowling portraying her as a reclusive genius who wrote the manuscript while living in a castle