Elinore is asked to invest $5000 in a friend's business with the promise that the friend will repay $5500 in one year's time. Elinore finds her best alternative to this investment, with similar risk, is one that will pay her $5400 in one year's time. U.S. securities of similar term offer a rate of return of 6%. What is the opportunity cost of capital in this case?
◦ 8%
◦ 9%
◦ 6%
◦ 10%