Rahul borrowed Rs. 830 from Mr. Lal at the rate of 12% p.a. SI for 3 years. He then added some money to the borrowed sum and lent it to Shobha for the same period at the rate of 14% p.a. interest. If Rahul gains Rs. 93.90 in the whole transaction, what amount did he add from his side?

• A. Rs. 115
• B. Rs. 120
• C. Rs. 125
• D. Rs. 105