Answer:
Invest
invest
Step-by-step explanation:
Game theory looks at the interactions between participants in a competitive game and calculates the best choice for the player.
Dominant strategy is the best option for a player regardless of what the other player is playing
firm a can either earn20 or 70 if it advertises or 5 or 50 if it does not advertise. this is the same for firm B.
Thus the option that would yield the highest payoff is for both firms to advertise.
this is an example of prisoners dilemma