The following graph shows intra-industry trade in the United States for two types of yogurts: Yoplait (a famous French brand) and Dannon (a famoud American brand): Refer to the above graph. The amouns of Y and D being exported and imported are necessarily equal in the U.S. necessarily unequal in the U.S. may or may not be equal in the U.S. Cannot be determined from the information given..