The rate of interest one two different schemes is the same and it is 20%. But in one of the schemes, the interest is compounded half-yearly and in the other, the interest is compounded annually. Equal amounts are invested in the schemes. If the difference of the returns after 2 years is Rs. 482, then what is the principal amount in each scheme?

• A. Rs. 10,000
• B. Rs. 16,000
• C. Rs. 20,000
• D. Rs. 24,000