100% accuracy, please!!

Part 1 Attempt 1/5 for 10 pts. Which of the following is true about the information ratio? It is the most appropriate performance measurement if the portfolio constitutes a small part of an investor's investments. It is the most appropriate performance measurement if the portfolio constitutes the entire investments of an investor. It is a ratio of portfolio excess return divided by the alpha. It is a ratio of alpha divided by the standard deviation of the residuals. It is a ratio of portfolio excess return divided by its beta