Use the following data to answer questions 4 through 8 regarding the performance of Guardian Stock Fund and the market portfolio: The risk-free return during the same period was 5%. 4. Calculate the information ratio measure of performance for Guardian Stock Fund. 5. Calculate Sharpe's measure of performance for Guardian Stock Fund. 6. Calculate Treynor's measure of performance for Guardian Stock Fund. 7. Calculate Jensen's measure of performance for Guardian Stock Fund. 8. Calculate the M2 measure of performance for Guardian Stock Fund