Gretchen can buy 17.4 ounces of brand a toothpaste for $5.22, or she can buy 26.6 ounces of brand b toothpaste for $6.65. which of the following explains which is the better deal? a. brand a is the better deal, because it costs $0.08 less per ounce than brand b. b. brand a is the better deal, because it costs $0.05 less per ounce than brand b. c. brand b is the better deal, because it costs $0.08 less per ounce than brand a. d. brand b is the better deal, because it costs $0.05 less per ounce than brand a.