ly use the margin allowed to 20) purchase 100 shares of MSFT at $25. If the price drops to $22, what is your percentage loss? 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 B) techniques used to measure the systematic risk of securities strategies for active securities trading D) techniques used to identify efficient portfolios of risky assets Which of the following 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. 22) mortgage scenarios will benefit the homeowner the most? 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 A) down; left and to thewn; right and B) up; right D) up; left