1. Calculate the pre-acquisition HHI for this industry, assuming that the remaining market share (i.e. the market share not held by any of the top 10 brewers) is equally held by 100 smaller breweries. Here, don't just calculate a number for the HHI but write down each step to show how you arrived at this number. 2. Calculate the post-acquisition HHI, i.e. the HHI after AB InBev acquired SAB Miller. Here also, don't just calculate a number for the HHI but write down each step to show how you arrived at this number. 3. Calculate the difference between the pre- and post-acquisition HHI and briefly discuss whether and why or why not the acquisition should have been challenged by the DoJ and FTC. Here, do not just state whether the DoJ and FTC would or not challenge the acquisition, but clearly explain why. 4. Based on the calculated difference between the pre- and post-acquisition HHI, briefly discuss whether and why or why not the acquisition should have been challenged by the EU Commission. Here also, do not just state whether the EU Commission would or not challenge the acquisition, but clearly explain why