Mr. Duggal invested Rs. 20, 000 with rate of interest at 20 p.c.p.a. The interest was compounded half yearly for first year and in the next year it was compounded yearly. What will be the total interest earned at the end of two years?

• A. Rs. 8,800
• B. Rs. 9,040
• C. Rs. 8,040
• D. Rs. 9,800
• E. None of these