The cross-price elasticity of demand between Coca-Cola and Pepsi is likely to be _____
A) positive, that is, Coke and Pepsi are complements.
B) negative, that is, Coke and Pepsi are complements.
C) positive, that is, Coke and Pepsi are substitutes.
D) negative, that is, Coke and Pepsi are substitutes.