4. Which of the following is not a money market instrument? A. Treasury bills B. Corporate bonds C. Federal funds D. CD 5. The margin requirement on a stock purchase is 50%. You use the full margin allowed to purchase 100 shares of MSFT at the price of $100 per share. If the price drops to $80, what is your percentage loss? A. 10% B. 30% C. 40% D. 50% 6. Suppose the interest rate is 6% for a municipal bond and is 8% for a corporate bond. If an investor's marginal tax rate is 25%, which of the following statements is correct? A. Municipal bond offers a higher after-tax rate of return B. Corporate bond offers a higher after-tax rate of return C. Municipal bond and corporate bond have the same after-tax rate of return D. Insufficient information to determine which bond offers a higher after-tax rate of return