单项选择题

Who Wrote Frankenstein
It began as a game to pass the time while the rain fell and lightning struck. Visiting Switzerland in June 1816, a small group—young, amorous and ever so literary—agreed to a ghost -story -writing contest. Mary Wollstonecraft Godwin, just 18, could come up with nothing at first. Then she had a nightmare—a walking corpse, glimmering yellow eyes. It delighted her. The next day, she announced to the others that she had imagined a story. Frankenstein was born.
Two years later Frankenstein; or, the Modem Prometheus was published anonymously. Some readers guessed the author was the poet Percy Shelley, who had written the novel’s preface. Those who knew that the author was Percy’s (by then) wife, Mary Shelley, were amazed. In an introduction to a revised 1831 edition, she told the Gothic tale of the ghost- story contest. (Percy, Lord Byron, John Polidori, and Mary’s stepsister, Claire, were the others present. ) As for Percy, she" certainly did not owe the suggestion of one incident, nor scarcely of one train of feeling" in the book, but she did depend upon his encouragement and more.
The question of whether Mary Mone wrote the novel, however, would not die. The answer matters, and not only because scholars who once regarded Frankenstein as merely a potboiler now consider it a progenitor of science fiction, a monument of Romantic literature, and a landmark text in gender studies. The answer matters because Frankenstein so beautifully explores the consequences of living and working in isolation. After cloistering himself to bring dead flesh to life, Victor Frankenstein condemns his creature to loneliness.
By examining Mary’s original drafts, Shelley scholar Charles E. Robinson identified Percy’s contributions to Frankenstein and, in 1996, edited a reproduction of Mary’s notebooks for scholarly audiences. Now he has published The Original Frankenstein; or, the Modem Prometheus, by Mary Shelley( with Percy Shelley). "The novel was conceived and mainly written by Mary Shelley," Robinson writes in his introduction, but he estimates that Percy wrote "at least"4,000 to 5,000 words of the 72,000 total. Percy may have corrected Mary’s parallel constructions, but he also mucked up her more straight forward language.
According to the passage, which one of the following statements is right

A.The idea of Frankenstein was originated from a story told by a group of young people.
B.Frankenstein is the name of the place where the story happened.
C.Percy contributed nothing to the writing of Frankenstein.
D.Mary acknowledged Percy’s encouragement and help to her work.