The librarian has 94 books to organize. He wants to put 5 books on some shelves and 6 books on other shelves. How could he arrange the books?
A. Have 8 shelves of 5 books, and 9 shelves of 6 books.
B. Have 9 shelves of 5 books, and 8 shelves of 6 books.
C. Have 5 shelves of 6 books, and 6 shelves of 5 books.
D. Have 7 shelves of 5 books, and 6 shelves of 6 books.