A sum was put at simple interest at a certain rate for 3 years. Had it been put at 1%higher rate, it would have fetched Rs. 5100 more. The sum is

• A. s. 1, 20, 000
• B. s. 1, 25, 000
• C. s. 1, 50, 000
• D. s.1, 70, 000