Why does the professor mention the characters that the man's classmates, Debbie and Maria, chose for their writing assignment? A. To help explain the method that was used to pair students together. B. To suggest that the man and his writing partner choose unconventional characters for their story. C. To point out an advantage of choosing roles that are familiar to both writing partners. D. To emphasize that the man needs to meet with his writing partner as soon as possible.