Vitamin Market Areas. Beta and Gamma produce vitamin A at a constant average cost of $5 per unit. Assume that low-price guarantees are illegal. Here are the possible outcomes:Price fixing (cartel). Each firm sells 30 units at a price of $20 per unit. Duopoly (no price fixing). Each firm sells 40 units at a price of $12 perUnderpricing (one firm charges $20 and the other charges $12). The low-price firm sells 70 units and the high-price firm sells 5Suppose Beta chooses a price first, followed by Gamma. Draw a game tree for the price-fixing game and predict the outcome.