Mr. Andrew invests $30,000 into a bank account at the beginning of each year for 20 years. The account pays interest at the end of every year at an annual effective interest rate i. The interest is taken out and reinvested in a separate account at an annual effective rate of i/2. The yield rate on the entire investment over the twenty year period is 8% per annum effective. Please calculate i.

A. 8.00%

B. 8.50%

C. 9.00%

D. 9.50%

E. 10%