2m purchase 100 shares of MSFT at $25. If the price drops to $22, what is your percentage loss? 20) The margin requirement on a stock purchase is 25% You fully use the margin allow ed to D) 15% A) 4896 B) 57% 99% 21) 21) Harry Markowitz is best known for his Nobel Prize-winning work on A) techniques used in valuing securities options techniques used to measure the systematic risk of securities C) strategies for active securities trading D) techniques used to identify efficient portfolios of risky assets 22) Which of the following mortgage scenarios will benefit the homeowner the most? 22)_ A) None of these options, as the banker's interest will always be protected. B) fixed rate mortgage when interest rates falls. C) fixed rate mortgage when interest rate rises. D) adjustable rate mortgage when interest rate increases. 23) Adding additional risky assets to the investment opportunity set will generally move the 23) efficient frontier and to thedown; ri B) up; right A) down; lefta D) up; left