The simple interest on a certain sum for $$3\frac{1}{2}$$ years at the rate of 10% per annum is ₹2,940. What will be the compound interest (in ₹) on the same sum for $$1\frac{1}{2}$$ years at the same rate wheninterest is compounded half-yearly (nearest to a rupee)?

A

1,324

B

1,470

C

1,564

D

1,125