The compound interest on a certain sum at a certain rate percent per annum for the second year and the third year are ₹1,650 and ₹1,815, respectively. The sum and the rate of interest are respectively
1
₹12,000 and 10%
2
₹15,000 and 10%
3
₹16,000 and 8%
4
₹12,000 and 12%