a. Did either manager outperform the index, based on the average annual return differential that he or she produced relative to the benchmark? Use a minus sign to ente negative values, if any. Do not round intermediate calculations. Round your answers to two decimal places. Manager A: % Manager B: % 's average return is less than the index and 's average exceeded that of the index. b. Calculate the tracking error for each manager relative to the index. Which manager did a better job of limiting his or her client's unsystematic risk exposure? Do not round intermediate calculations. Round your answers to two decimal places. Manager A: % Manager B: % did the better job of limiting the client's exposure to unsystematic risk as the difference between manager's returns and those of the index has a standard deviation