The 1980 United Nations Convention on Contracts for the International

The 1980 United Nations Convention on Contracts for the International Sale of Goods (CISG) has been adopted by eighty-four countries,including the United States and China.Glide Ride Inc.in the U.S.and Hangzhou Bikes Ltd.in China enter into a contract for a sale of bicycle parts.A dispute arises that leads to a conflict between the CISG and the UCC.In this situation,the CISG applies because​

A) it is a treaty of the U.S.national government.
B) it is a convention of the United Nations.
C) it has been ratified by both parties' countries.
D) China has not adopted the UCC.