Flo buys a Go! battery that, if used in a Hi-Digital music player, which can be powered only by an IntraChemico battery, may cause the player to explode. Flo is not aware of the danger, Go!’s instructions do not warn of it, and Go! batteries are the same shape as IntraChemico batteries. Flo puts the Go! battery in a Hi-Digital player, which explodes, injuring Flo. Go!’s seller is most likely _________.