Does the united nations convention on contracts for the international sale of goods (cisg) apply to the contract between onyx advertising and jalapenos unlimited? a. no, because the united states has not signed the cisg. b. yes, because the cisg applies to commercial sales of goods between two states that have ratified the treaty. c. yes, because the cisg applies to all sales of goods between two states that have ratified the treaty. d. no, because mexico has not signed the cisg.