This is an individual assignment. Figure 3.3 contains data on pharmaceutical sales in the United States for cancer drugs (i.e., oncology). Your task is to calculate the CR4, CR8, and HHI for this market. Calculate the Market Share You will do this by first figuring out the market share of each firm's oncology sales. Take the number on the right side of the chart for the firm's revenues in billions. You have to calculate the market share of each firm by dividing its individual revenue by the total industry revenue. Calculate the Total Industry Revenue To get the total industry revenue, add together all of the firms' revenues. Calculate Your Metrics Finally, calculate your metrics (CR4, CR8, and HHI)