4the lowing petdomane data fr woio agers anda conmon benchmark portfolio: (20 points) Benchmark Manager A Manager B Weight 0.6 0.3 0.1 Return 12.5% 3.5% 0.2% Return 15.5% 3.0% 0.3% Return 12.0% 25% 0.3% Wei Stock Bond Cash 0.5 0.3 0.2 0.7 0.2 0.1 (A). Calculate (1) the overall return to the benchmark portfolio, (2) the overall return to manager A's actual portfolio, and (3) the overall return to manager B's actual portfolio. Briefly comment on whether these managers have under- or outperformed the benchmark fund. (B). Using attribution analysis, calculate (1) the selection effect for managers A and B, and (2) the allocation effect for managers A and B. Using these numbers in conjunction with your results from part A, comment on whether these managers have added value through their selection skills, their allocation skills, or both