Jupiter Steel is the chief provider of metals to Greystone Motors. Greystone Motors has 2 models of cars - one for commercial and ordinary consumers and another for professional car racing teams. Greystone Motors has designated dealers to sell its commercial cars to consumers, while racing cars are sold directly to the racing teams. In such a distribution channel, which of the following would be considered a horizontal conflict?
a. a conflict between Jupiter Steel and Greystone Motors
b. a conflict between Jupiter Steel and Greystone dealers
c. a conflict between two Greystone Motors car dealerships
d. a conflict between a Greystone Motors car dealership and a racing team
e. a conflict between Greystone Motors and its car dealerships