In the hawk-dove game, fighting over the resource (both players choosing "hawk") should never be the optimal strategy. What is the best way for players to choose an optimal strategy? O The cost of a direct fight (c) is greater than the resource value (v). O There is a substantial cost to backing down (playing "dove"). O There are size or behavioral cues for the players to tell which player is likely to win the fight. O There is no optimal strategy in this game.