Which sentence from the passage supports the idea that Frankenstein was inspired by a vision? A. "Mary would later describe how a waking dream led her to conceive of her story idea." B. "The group spent their time writing, boating on the lake, and talking late into the night." C. "One night, the group sat around a fire, reading German ghost stories to one another." D. "With her husband's encouragement, she expanded this story into a novel."