Two cola companies, Cola A and Cola B, must decide their advertising plans for next season. Each has two options: “normal” advertising level or a special campaign with an endorsement by singer Jian Li. The companies must simultaneously decide which strategy to choose. Net profits, as a function of their choices, are as follows. If both firms choose “normal” advertising levels, then Cola A makes 40 and Cola B makes 30. If Cola A goes for “normal” and Cola B signs Jian Li, then Cola A gets 10 and Cola B gets 25. If Cola A signs Jian Li and Cola B does not, then Cola A gets 60 and Cola B gets 20. Finally, if both companies sign Jian Li then Cola A loses 30 and Cola B loses 20. All of these values are common knowledge to the players. The players’ goal is to maximize net profit. Are there any dominant strategies in this game? In the Nash equilibrium of this game, what is Cola A’s and Cola B’s action?