Arun has a certain sum deposited in a bank at 5% per annum. The bank increases the rate of interest from 5% to 6%. After increase in rates, Arun deposits ₹ 2000 more in his account. The annual interest received by him now is ₹ 220 more than before. Find his original deposit.
A₹ 12,000
B₹ 13,250
C₹ 6,792
D₹ 10,000