Consider an infinitely repeated game where Firm A and Firm B agree to cooperate and not offer warranty coverage as represented in the payoff matrix below: Firm A Warranty Assuming both firms follow a grim trigger strategy, what discount value d is Firm A indifferent between maintaining the collusive agreement with Firm B and cheating? (Only include numerical values in the answer field. Do not include any text or symbols, such as s, %, etc.)