A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:

• ক Rs. 2000
• খ Rs. 15,000 ✅ সঠিক উত্তর
• গ Rs. 20,000
• ঘ Rs. 10,000