Assume that one of your cousins takes a loan of $12,000 from a bank at 15 per cent interest rate. If your cousin plans to repay $300 per month against this loan amount, in how many years she would be able to repay the loan (and accumulated interest) fully?

55.80 years

4.65 years

3.83 years

4.96 years

Which is the correct answer the process to find it please.