Suppose 'Harry Potter and the Philosopher's Stone' is the first book in the Harry Potter series written by J.K. Rowling. It was published in 1997 and introduced readers to the magical world of Hogwarts and the young wizard Harry Potter. The book spawned a successful film series and a dedicated fan base.
Can we infer that 'J.K. Rowling is a pseudonym'? Yes, no, or maybe?