Mr. Hann is trying to decide how many new copies of a book to order for his students. Each book weighs 6 ounces.

Which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces?

(–3, –18)
(–0.5, –3)
(0, 0)
(0.5, 3)