Coke and Pepsi Are Constantly Doing Taste Tests to Prove

Multiple Choice

Coke and Pepsi are constantly doing taste tests to prove which is a more popular drink. They spend a great deal on advertisements every year, as well. This is an example of which of the five forces?

A) bargaining power of customers
B) threat of new entrants
C) bargaining power of suppliers
D) rivalry among existing firms
E) threat of substitution