Above is the payoff matrix for Huggies and Pampers diapers as they employ different advertising expenditure strategies. The first number in each quadrant is the payoff for Huggies and the second number is the payoff for Pampers. a. In what type of market structure do Huggies and Pampers compete? Explain how you know this. b. If Huggies follows an intensive advertising, which advertising strategy is better for Pampers? c. Define the term "dominant strategy." What is the dominant strategy for Huggies? d. Define the term "Nash equilibrium." What is the Nash equilibrium for Huggies and Pampers? Explain.