12. [-/1 Points] DETAILS (a) Compute the effective interest rate corresponding to a nominal interest rate of 5% compounded semiannually. Effective interest rate, as a percent, rounded to 4 decimal places = % (b) Compute the effective interest rate corresponding to a nominal interest rate of 4.9% compounded monthly. Effective interest rate, as a percent, rounded to 4 decimal places = % (c) Select the investment that offers the better return. 5% compounded semiannually 4.9% compounded monthly