The correct option a. Both firms cut prices, is the Nash equilibrium for this game.
In an oligopoly model proposed by Bertrand, enterprises individually decide on pricing (rather than quantity) in an effort to maximize profits. This is performed by taking the prices of competitors as given.
For the stated conditions,
The choices include colluding to keep the price at the collusive level or lowering the price to try to enhance the firm's market share (cut).
The payoffs are expressed as annual revenues in the millions of dollars.
Thus, then both firms cutting prices will be the game's Nash equilibrium.
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