Garbanzo lowers the price for its salad buffet. Pinto’s, a close by rival restaurant, in that case lowers its price for its salad buffet, a near substitute. If Garbanzo notices it, then the manager lowers the price again. It trend continues. Such restaurants are following a strategy game theorist’s call: (i) Nash equilibrium. (ii) tit-for-tat. (iii) the domino effect. (iv) grim strategy. (v) cut-throat competition.
How can I solve my Economics problem? Please suggest me the correct answer.