A sum of ₹9,000 amounts to ₹11,979 at x% p.a. for 1\(\frac{1}{2}\) years, interest compounded semi - annually. What will be the compound interest on the same sum at the same rate for 2 years, if interest is compounded yearly?
1
₹3,980
2
₹3,890
3
₹3,860
4
₹3,960