Joskow's paper discusses some strategic ways that the owners of power plants could have exercised market power in the California PX market (this is different than what Enron did, which mostly affected the zonal adjustment prices calculated by the California ISO). Again drawing on the market with four generators in Question 1, suppose that you owned both Generators A and D. Demand in California is 55 MWh. Describe a way that you could manipulate the PX auction to increase the clearing price, and calculate whether your revenues would increase under such a strategy.