Suraj borrowed a sum of money from Ajay at a certain rate of simple interest for two years and lent it to Vinay at same rate of compound interest compounded yearly for two years. At the end of two years he received C.I. of Rs. 1230 and paid S.I. of Rs. 1200. Find the sum and rate of interest.

• A. Rs. 10000, 5% p.a.
• B. Rs. 12000, 8% p.a.
• C. Rs. 12000, 5% p.a.
• D. Rs. 15000, 8% p.a.