Consider a borrow-and-invest strategy in which you use $100 of your own money and borrow another 25% to invest ib the market index fund. If the risk-free interest rate is 5.1% and the expected return on the market index fund is 17.1%, what is the expected rate of return on the borrow-and-invest strategy? Multiple Choice 20.1% 22.2% . 17.1% 18.1%