Palmer was a manufacturer of lamps and other household products. Palmer asked Standard Distributors how much it would cost to purchase her glassmaking materials from Standard for the upcoming year. She indicated that during the current year she would use 5,000 pounds of material. She received a letter a few days later which indicated Standard could supply her at a rate of 85 cents a pound and that they could supply her with all the material she needed for the upcoming year. Palmer wrote back to them accepting their offer to supply her with her materials, but only if they would give her a discount of 5 percent if she paid within 15 days from Standard's billing date. Palmer's letter regarding the 5 percent discount is best characterized as: a) making a counter-offer but not rejecting Standard's offer. b) rejecting Standard's offer and making a counter-offer. O c) accepting the offer and proposing an additional term since both Palmer and Standard are merchants. d) accepting the offer and proposing an additional term regardless of whether Palmer and Standard are both merchants