Consider the following performance data for two portfolio managers (A and B) and a common benchmark portfolio: BENCHMARK MANAGERA MANAGER B Return Return Weight ReturnW 0.3 -50% Stocks 0.6 -5.0% 0.5 -4.0% -3.5 Bonds 2.5 3.5 0.3 0.2 0.4 Cash 0.1 0.3 0.3 0.3 0.3 0.3 a) Calculate the overall return of the benchmark portfolio, the overall return to Managers A actual portfolio, and the overall return to Manager's B actual portfolio. (40 marks) b) Briefly comment on whether these managers have under- or outperformed the benchmark fund. (20 marks) c) Using attribution analysis, calculate the selection effect for Manager A, and the allocation effect for Manager B. Using these numbers in conjunction with your results from part a), comment on whether these managers have added