Elinore is asked to invest $5,300 in a friend's business with the promise that the friend will repay $5,830 in one year's time. Elinore finds her best alternative to this investment, with similar risk, is one that will pay her $5,777 in one year's time. U.S. securities of similar term offer a rate of return of 7%. What is the opportunity cost of capital in this case?

A. 10%

B. 7%

C. 11%

D. 9%