Two Diners,that Are Located Close to Each Other,compete Aggressively for Customers.One

Essay

Two diners,that are located close to each other,compete aggressively for customers.One of their main strategies is the 'daily special' that they use to draw customers.The following payoff matrix shows how many customers they attract per day if their daily special is either beef stew [B],pot roast [P],or salmon pie [S].
What daily special will be chosen by Diner A and Diner B in equilibrium if they agree not to benefit at each other's expense??