Suppose you are a financial manager and work for the bank. One of your clients is confused about the definition of interest rate risk. Please explain what is meant by interest rate risk to your clients. Based on your performance, you have been promoted to an investment manager to manage $200 million portfolio of corporate bonds. Under the current COVID-19 situation, the interest rates are expected to fall. Your customers are concerned about the rate of return on corporate bonds. Based on the given situation (i.e., the interest rates are expected to fall), what adjustments should you make to your portfolio?