Two rms must simultaneously choose their advertising budget; their options are H or L. Payoffs are as follows: if both choose H , then each gets 5; if both choose L, then each gets 4; if rm 1 chooses H and rm 2 chooses L, then rm 1 gets 8 and rm 2 gets 1; conversely, if rm 2 chooses H and rm 1 chooses L, then rm 2 gets 8 and rm 1 gets 1. (a) Determine the Nash equilibria of the oneshot game. (b) Suppose the game is indenitely repeated and that the relevant discount factor is 6 = .8. Determine the optimal symmetric equilibrium